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Pan of Globular Cluster NGC 2005 in Dorado | Hubble
The globular cluster NGC 2005 is not unusual in and of itself; but it is a peculiarity in relation to its surroundings. NGC 2005 is located about 750 light-years from the heart of the Large Magellanic Cloud (LMC). This is the Milky Way’s largest satellite galaxy. It lies about 162,000 light-years from Earth. Globular clusters are densely-packed clusters that can be made up of tens of thousands or millions of stars. Their density means that they are tightly gravitationally bound, and are therefore, very stable. This stability contributes to their longevity—globular clusters can be billions of years old, and often contain very old stars. Thus, studying globular clusters in space can be a little like studying fossils on Earth. Fossils give insights into the characteristics of ancient plants and animals, while globular clusters illuminate the characteristics of ancient stars.
Current theories of galaxy evolution predict that galaxies merge with one another. It is widely thought that the relatively large galaxies that we observe in the modern Universe were formed via the merging of smaller galaxies. If this is correct, then astronomers would expect to see evidence that the most ancient stars in nearby galaxies originated in unique galactic environments. As globular clusters are known to contain ancient stars, and because of their stability, they are an excellent laboratory to test this hypothesis.
NGC 2005 is such a globular cluster, and its very existence has provided evidence to support the theory of galaxy evolution via mergers. Indeed, the stars in NGC 2005 have a chemical composition that is distinct from the stars in the LMC around it. This suggests that the LMC underwent a merger with another galaxy during its history. Although the other galaxy has long-since merged and otherwise dispersed, NGC 2005 remains behind as an ancient witness to the long-past merger.
Credit: European Space Agency/Hubble & NASA, F. Niederhofer, L. Girardi, N. Bartmann (ESA/Hubble)
25 Images to Celebrate 25th Anniversary of NASA's Chandra Observatory
To celebrate the 25th anniversary of its launch, NASA’s Chandra X-ray Observatory is releasing 25 never-before-seen views of a wide range of cosmic objects.
These images, showing data from Chandra, demonstrate how X-ray astronomy explores all corners of the Universe. By combining X-rays from Chandra with other space-based observatories and telescopes on the ground, astronomers can tackle the biggest questions and investigate long-standing mysteries across the cosmos.
On July 23, 1999, the Space Shuttle Columbia launched into orbit carrying Chandra. It was then the heaviest payload ever carried by the Shuttle. With Commander Eileen Collins at the helm, the astronauts aboard Columbia successfully deployed Chandra into its highly-elliptical orbit that takes it nearly one-third of the distance to the Moon.
X-rays are an especially penetrating type of light that reveals extremely hot objects and very energetic physical processes. Many fascinating regions in space glow strongly in X-rays such as the debris from exploded stars and material swirling around black holes. Stars, galaxies, and even planets also give off X-rays that can be studied with Chandra.
The new set of images is a sample of almost 25,000 observations Chandra has taken during its quarter century in space.
In 1976, Riccardo Giacconi and Harvey Tananbaum first proposed to NASA the mission that would one day become Chandra. Eventually, Chandra was selected to become one of NASA’s “Great Observatories,” along with the Hubble Space Telescope, Compton Gamma Ray Observatory and Spitzer Space Telescope, each looking at distinct types of light.
Today, astronomers continue to use Chandra data in conjunction with other powerful telescopes, including the James Webb Space Telescope and the Imaging X-ray Polarimetry Explorer (IXPE).
Chandra science has led to over 700 Ph.Ds and has supported a diverse talent pool of more than 3,500 undergraduate and graduate students, about 1,700 postdocs and over 5,000 unique Principal Investigators throughout the U.S. and worldwide. Demand for the telescope has consistently been extremely high throughout the entire mission with only about 20% of the requested observing time able to be approved.
Despite being in space for a quarter century, Chandra is operating remarkably well and is still making discoveries. Scientists are looking forward to using this exceptional telescope for years to come.
This picture features the barred spiral galaxy NGC 3059. It lies about 57 million light-years from Earth. The data used to compose this image were collected by Hubble in May 2024, as part of an observing program that studied a number of galaxies. All the observations were made using the same range of filters—partially transparent materials that allow only very specific wavelengths of light to pass through.
Filters are used extensively in observational astronomy, and can be calibrated to allow either extremely narrow or somewhat broader ranges of light through. Narrow-band filters are invaluable from a scientific perspective because certain light wavelengths are associated with specific physical and chemical processes. For example, under particular conditions, hydrogen atoms are known to emit red light with wavelength value of 656.46 nanometers. Red light at this wavelength is known as H-alpha emission, or the ‘H-alpha line’. It is very useful to astronomers because its presence acts as an indicator of certain physical processes and conditions; it is often a tell-tale sign of new stars being formed, for example.
Thus, narrow-band filters calibrated to allow H-alpha emission through can be used to identify regions of space where stars are forming.
Such a filter was used for this image, the narrow-band filter called F657N or the H-alpha filter. The F stands for filter, and the N stands for narrow. The numerical value refers to the peak wavelength (in nanometers) that the filter lets through. The eagle-eyed amongst you may have noticed that 657 is very close to the 656.46 H-alpha line’s wavelength. Data collected using five other filters contributed to this image as well, all were wide-band filters. They allow a wider range of light wavelengths through. This is less useful for identifying extremely specific lines (such as the H-alpha line) but still enables astronomers to explore relatively specific parts of the electromagnetic spectrum. In addition, collectively the information from multiple filters can be used to make beautiful images such as this one.
Image Description: A spiral galaxy seen face-on, so that its many arms and its glowing, bar-shaped core can be easily seen. The arms are filled with bluish patches of older stars, pink patches where new stars are forming, and dark threads of dust. A few bright stars with cross-shaped diffraction spikes lie in the foreground.
Earth-directed Coronal Mass Ejection from Sun | NASA’s SDO
The Sun emitted an Earth-directed coronal mass ejection (CME) on July 21, 2024. NASA’s Solar Dynamics Observatory (SDO), watching the Sun constantly in extreme ultraviolet light, captured images of the event (see brief, bright flash at upper left).
A CME is an eruption of solar material. When they arrive at Earth, a geomagnetic storm can result. A G2 geomagnetic storm watch has been issued. Watches of this level are uncommon. The effects of the CME are expected on July 24.
To see how such space weather may affect Earth, please visit the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center: https://spaceweather.gov
NOAA is the U.S. government’s official source for space weather forecasts, watches, warnings, and alerts.
NASA works as a research arm of the nation’s space weather effort. NASA observes the Sun and our space environment constantly with a fleet of spacecraft that study everything from the Sun’s activity to the solar atmosphere, and to the particles and magnetic fields in the space surrounding Earth.
Aurora, Meteor, Stars, Satellites & Sunrise | International Space Station
NASA astronaut Matthew Dominick: "Satellites, stars, and, a meteor . . . Night timelapse just prior to sunrise. If you watch carefully, part way through you can see a meteor streak towards Earth."
Photo details: 50mm, f1.2, ISO 6400, 1/4s, with a 1/2s interval
Roscosmos (Russia): Nikolai Chub, Alexander Grebenkin (Russia)
NASA: Tracy Dyson, Matthew Dominick, Mike Barrett, Jeanette Epps
NASA’s Boeing Crew Flight Test astronauts Suni Williams and Butch Wilmore
An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada. The ISS has been the most politically complex space exploration program ever undertaken.
Learn more about the important research being operated on Station:
Spiral Galaxy NGC 3430: "An Island Universe" | Hubble Space Telescope
In this Hubble picture, we are treated to a detailed view of NGC 3430. A spiral galaxy, it lies 100 million light-years from Earth in the constellation Leo Minor. Several other galaxies are located relatively nearby, just out of frame; one is close enough that gravitational interaction is driving star formation in NGC 3430.
NGC 3430 is a fine example of a galactic spiral. This may be why it ended up as part of the sample that Edwin Hubble used to define his classification of galaxies. Namesake of the Hubble Space Telescope, in 1926 he authored a paper that classified four hundred galaxies by their appearance—as either spiral, barred spiral, lenticular, elliptical or irregular. This straightforward typology proved immensely influential, and the modern, more detailed schemes that astronomers use today are still based on it. NGC 3430 itself is an SAc galaxy, a spiral lacking a central bar with open, clearly-defined arms.
At the time of Hubble’s paper, the study of galaxies in their own right was in its infancy. With the benefit of Henrietta Leavitt’s work on Cepheid variable stars, Hubble had only a couple of years before settled the debate about whether these ‘nebulae’, as they were called then, were situated within our galaxy or were distant and independent. He himself referred to ‘extragalactic nebulae’ in his paper, indicating that they lay beyond the Milky Way galaxy. Once it became clear that these distant objects were very different from actual nebulae, the favored term for a while was the quite poetic ‘island universe’. While NGC 3430 may look as if it still deserves this moniker, today we simply call it and the objects like it a ‘galaxy’.
Image Description: A spiral galaxy with three prominent arms wrapping around it, and plenty of extra gas and dark dust between the arms. There are shining blue points throughout the arms and patches of gas out beyond the galaxy’s edge, where stars are forming. The center of the galaxy also shines brightly. It is on a dark background where small orange dots mark distant galaxies.
Pan of Dwarf Irregular Galaxy NGC 5238 in Canes Venatici | Hubble
The galaxy featured in this Hubble picture is the dwarf irregular galaxy NGC 5238, located 14.5 million light-years from Earth in the constellation Canes Venatici. Its unexciting, blob-like appearance, resembling more an oversized star cluster than a galaxy, belies a complicated structure that has been the subject of considerable research. Here, the NASA/European Space Agency Hubble Space Telescope is able to pick out the galaxy’s countless stars, as well as its associated globular clusters—the glowing spots both inside and around the galaxy that contain ever more stars.
NGC 5238 is theorized to have recently—here meaning no more than a billion years ago—had a close encounter with another galaxy. The evidence for this is the tidal distortions of NGC 5238’s shape, the kind produced by two galaxies pulling on each other as they interact. There is no nearby galaxy that could have caused this disturbance, so the hypothesis is that the culprit is a smaller satellite galaxy that was devoured by NGC 5238. Traces of the erstwhile galaxy might be found by closely examining the population of stars in NGC 5238, a task for which the Hubble Space Telescope is an astronomer’s best tool. Two tell-tale signs would be groups of stars with properties that look out of place compared to most of the galaxy’s other stars, indicating that they were originally formed in a separate galaxy, or stars that look to have all formed abruptly at around the same time. This would occur during a galactic merger. The data used to make this image will be put to use in testing these predictions.
Despite their small size and unremarkable appearance, it is not unusual for dwarf galaxies like NGC 5238 to drive our understanding of galaxy formation and evolution. One main theory of galaxy evolution is that galaxies formed ‘bottom-up’ in a hierarchical fashion: star clusters and small galaxies were the first to form out of gas and dark matter, and they gradually were assembled by gravity into galaxy clusters and superclusters, explaining the shape of the very largest structures in the Universe today. A dwarf irregular galaxy like NGC 5238 merging with an even smaller companion is just the type of event that might have begun this process of galaxy assembly in the early Universe. So, it turns out that this tiny galaxy may serve as a testbed for the most fundamental predictions in astrophysics!
Image Description: A dwarf irregular galaxy. It appears as a cloud of bluish gas, filled with point-like stars that also spread beyond the edge of the gas. A few glowing red clouds sit near its center. Many other objects can be seen around it: distant galaxies in the background, four-pointed stars in the foreground, and star clusters that are part of the galaxy—shining spots surrounded by more tiny stars.
Credit: ESA/Hubble & NASA, N. Bartmann (ESA/Hubble)
The Lagoon Nebula in Sagittarius | Hubble Space Telescope
This NASA/European Space Agency Hubble Space Telescope image shows the Lagoon Nebula, an object with a deceptively tranquil name. The region is filled with intense winds from hot stars, churning funnels of gas, and energetic star formation, all embedded within an intricate haze of gas and pitch-dark dust.
Distance:4,500 light years
Credit: NASA, ESA, J. Trauger (Jet Propulsion Laboratory)
BBC Star Diary: Mars Gives Taurus Constellation Another Eye (July 22-28, 2024)
The planet of Mars passes through Taurus this week, giving the constellation a second red eye. Find out how to see it for yourself and other astronomy highlights in this week's episode of Star Diary July 22-28, the stargazing podcast guide from the makers of BBC Sky at Night Magazine.
NASA to Host Panels, Forums & More at Oshkosh 2024: July 22-28
Each summer, aviation enthusiasts and experts from around the planet—including NASA’s aeronautical innovators—descend into a regional airport near Oshkosh, Wisconsin, to attend the Experimental Aviation Association’s AirVenture Oshkosh. In this 66 second video, get a sense of what NASA’s presence is like at Oshkosh through scenes captured from previous years.
The weeklong airshow and fly-in, where droves of pilots arrive in their own aircraft, draws hundreds of thousands of aviation enthusiasts to enjoy aerial demonstrations, static aircraft displays, aviation-related forums, and hands-on activities for people of all ages and all education levels.
NASA will appear at Oshkosh with a full slate of interactive exhibits, informative activities, and fascinating people to meet. This year’s event, held July 22-28, is chock-full of things to do and see.
If you’re attending Oshkosh this year, here’s a brief summary of what you can expect inside the NASA Pavilion and on the forum stages:
NASA’s pavilion will feature the X-66 sustainable flight demonstrator, X-59 quiet supersonic demonstrator, a Saab 340B, a small drone, an air taxi concept, and a DeHavillland “Dash 7.” The Saaab and Dash 7 are part of the Electrified Powertrain Flight Demonstration project.
Meet and greet opportunities with NASA’s researchers, leaders, pilots, and maybe even an astronaut
Hands-on educational STEM activities and handouts for kids and adults of all ages
Talks and panels on NASA activities from our leadership, engineers, pilots, and other subject matter experts
Models of NASA aircraft and spacecraft
And if you are looking for certain activities, NASA guides will be available onsite to help you find the ones best suited to you and your group.
NASA Panel Events
In addition to the NASA Pavilion and forum talks, there are also several NASA-focused panels that should not be missed.
For example, the “NASA Artemis Campaign: For All Humankind” panel will be held at 7 p.m. CDT on Friday, July 26 at AirVenture’s Theater in the Woods. The event will feature astronaut Randy Bresnik and subject matter experts discussing the upcoming Artemis II mission.
“Women of NASA,” another great panel, will take place at 8:30 a.m. CDT on Wednesday, July 24, the WomenVenture Center. It will feature several inspiring NASA Women, from senior leaders to project managers and engineers.
A list of all NASA activities is available on AirVenture’s website, and our aeronautical innovators will be inside the NASA Pavilion to assist you.
More NASA’s activities are available on the event schedule or on EAA’s app:
The NASA Pavilion’s STEM Zone will have interactive activities and demonstrations. NASA will also have materials available for educators. The STEM Zone will be open Monday to Sunday, July 22-28, from 9 a.m. to 2:30 p.m. CDT.
The KidVenture buildings, hosted by the EAA Museum, will include hands-on NASA STEM activities also, and NASA will participate at the AeroEducate Center in Aviation Gateway Park with activities intended for middle—and high-school aged youth—including lectures and a drone flight cage.
Video Credit: NASA's Aeronautics Research Mission Directorate
China's Lunar Exploration Program Welcomes More Global Partners
The United Nations has marked July 20 as International Moon Day to honor the anniversary of the first landing of a human on the Moon. Following China's successful Chang'e-6 lunar mission this year, many countries now seek to work more closely with China on future lunar programs.
China's aerospace and lunar exploration programs are open to the world and welcome all countries to engage in cooperative missions and projects, said Wu Weiren, chief designer of the country's lunar exploration program, ahead of the International Moon Day on July 20.
After the successful operation of payloads from the European Space Agency (ESA), France, Italy, and Pakistan in China's Chang'e-6 Moon mission, China will aim to expand its international collaboration in upcoming lunar exploration endeavors, Wu said in an interview with China Global Television Network (CGTN).
"We are open and welcome international cooperation from all countries, including those countries from the Global South, emerging BRICS countries, as well as Western countries. We do not have any isolating or exclusionary policies, and we want to cooperate in an all-round way. I think our principle is to share data, share results. We are willing to co-build and co-share with our partners. We have no intention to establish small circles or groups. Therefore, China's aerospace and lunar exploration programs, including planetary exploration, are all open to the whole world," said Wu.
He also offered an update on the development of the international lunar research station (ILRS) and the country’s plans for the station.
"The international lunar research station is actually the first large-scale scientific project to be implemented in our country. We are preparing to build a lunar scientific research station at the south pole of the Moon. This scientific research station will be combined with an orbital station and a lunar surface station, plus ground facilities such as the headquarters for major scientific projects. This is being done so that work can continue for a long time, with or without people at the south pole of the moon. It will enable scientific exploration and resource development," said Wu.
"We hope to build a basic station by 2035, and an extended station by 2045. So far, we have signed agreements with more than 10 countries and nearly 30 international research institutions. We hope to work with 50 countries by inviting 500 foreign scientific research institutions, and 5,000 foreign scientific research personnel to jointly build our international lunar scientific research station," he added.
Wu said that in the future, visiting the the international lunar research station will no longer be just a dream for ordinary citizens, while Chinese astronauts and international partners will reach deeper into the solar system.
"I think China should also think about these plans, including space tourism, space breeding, and space mining in the future. We can achieve these targets on the Moon and Mars. I don't think this is too far away," Wu said.
Space breeding involves exposing plant seeds to cosmic radiation and microgravity in space to generate potentially beneficial genetic mutations.
30 Years Since Historic Shoemaker-Levy 9 Comet Impacts of Jupiter | NASA
In July 1994, astronomers around the world watched with bated breath as fragments of comet Shoemaker-Levy 9 slammed into the planet Jupiter.
The impacts proved to be impressive. Fragments plunged into Jupiter’s atmosphere over the course of six days. Like the splash from throwing a rock into a pond, the impacts created giant plumes of material from Jupiter’s lower atmosphere which rose as high as 1,900 miles or 3,000 kilometers above the cloud tops into the stratosphere. In the aftermath, the plume splashback scarred Jupiter’s atmosphere with dark clouds of impact debris that could be seen for months as they were gradually dispersed by Jupiter's winds.
This historic event helped to give rise to the field of planetary defense.
Explore more about NASA’s mission of finding, tracking and better understanding asteroids and comets that could pose an impact hazard to Earth: https://www.nasa.gov/planetarydefense
NASA Apollo 11 Anniversary Event: "Go for The Moon" Outdoor Show [Replay]
Over 500,000 people assembled on the National Mall in Washington, DC, in July 2019 for the Apollo 50: Go For The Moon projection show on the Washington Monument. You can now relive this once-in-a-lifetime celebration in full. Go for the Moon captures the excitement of the first Moon landing and tells the story of the iconic Apollo 11 mission from launch to landing and beyond.
"Apollo 50: Go for the Moon" was commissioned by the National Air and Space Museum and produced by 59 Productions. The Museum's Apollo 50 programming was made possible by the support of Boeing with additional support from Raytheon.
Learn more about NASA's historic Apollo 11 Moon Mission:
New Mars 2024 Images Released| NASA Curiosity & Perseverance Mars Rovers
MSL - sol 4142
NASA’s Curiosity Mars rover captured this view of Gediz Vallis channel on March 31, 2024. This area was likely formed by large floods of water and debris that piled jumbles of rocks into mounds within the channel.
Mars 2020 - sol 1213
MSL - sol 4239
MSL - sol 4244
Mars 2020 - sol 1193
Mars 2020 - sol 1213
Mars 2020 - sol 1192
MSL - sol 4178
While exploring the Gediz Vallis channel in May, NASA’s Curiosity rover captured this image of rocks that show a pale color near their edges. These rings, also called halos, resemble markings seen on Earth when groundwater leaks into rocks along fractures, causing chemical reactions that change the color.
Elon Musk: "And now it is time for America to reach far greater heights by sending astronauts to Mars! Ultimately, anyone who wants to be a space traveler and help build a new civilization on Mars should be able to do so. That is an inspiring future!"
Celebrating 11+ Years on Mars (2012-2024)
Mission Name: Mars Science Laboratory (MSL)
Rover Name: Curiosity
Main Job: To determine if Mars was ever habitable to microbial life.
Launch: Nov. 6, 2011
Landing Date: Aug. 5, 2012, Gale Crater, Mars
Celebrating 3+ Years on Mars
Mission Name: Mars 2020
Rover Name: Perseverance
Main Job: Seek signs of ancient life and collect samples of rock and regolith (broken rock and soil) for return to Earth.
Launch: July 30, 2020
Landing: Feb. 18, 2021, Jezero Crater, Mars
For more information on NASA's Mars missions, visit: mars.nasa.gov
The Plaque NASA Apollo 11 Astronauts Left on The Moon in July 1969
This is a replica of the plaque the Apollo 11 astronauts left behind on the Moon in commemoration of the historic event. The plaque was made of stainless steel, measuring nine by seven and five-eighths inches, and one-sixteenth inch thick. The plaque was attached to the ladder on the landing gear strut on the descent stage of the Apollo 11 lunar module (LM). Covering the plaque during the flight, there was a thin sheet of stainless steel that was removed on the lunar surface.
On July 20, 1969—55 years ago today—NASA's Apollo 11 lunar module, named "Eagle", touched down on the Moon with commander Neil Armstrong and lunar module pilot Buzz Aldrin. They landed in the south-western corner of the dark lunar plain Mare Tranquillitatis ("Sea of Tranquility") on the Moon's near side.
The Apollo 11 crew left behind an American flag, a patch honoring the fallen Apollo 1 crew, and this plaque on one of Eagle’s legs. It reads, “Here men from the planet Earth first set foot upon the moon. July 1969 A.D. We came in peace for all mankind.”
NASA Apollo 11: Earth Views | 55th Anniversary (1969-2024)
View of the Pacific Ocean and the West coast of the United States and Mexico
View of Africa, the Middle East, and western Asia from the Apollo 11 spacecraft
Distant Earth view from Apollo 11 spacecraft
Landing site view of Earth (in background at top) from the dark lunar plain Mare Tranquillitatis ("Sea of Tranquility") with the Apollo 11 lunar module in the foreground.
View of Earth and of the Apollo 11 lunar module ascent stage (with commander Neil Armstrong and lunar module pilot Buzz Aldrin aboard) from the Apollo 11 command and service (CSM) module with astronaut/pilot Michael Collins.
Earthrise from lunar orbit
Sunlit view of Earth's atmosphere
Mexico and the Yucatan Peninsula
On July 20, 1969—55 years ago today—NASA's Apollo 11 lunar module, named "Eagle", touched down on the Moon with commander Neil Armstrong and lunar module pilot Buzz Aldrin. They landed in the south-western corner of the dark lunar plain Mare Tranquillitatis ("Sea of Tranquility") on the Moon's near side.
The Apollo 11 crew left behind an American flag, a patch honoring the fallen Apollo 1 crew, and a plaque on one of Eagle’s legs. It reads, “Here men from the planet Earth first set foot upon the moon. July 1969 A.D. We came in peace for all mankind.”
