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This wide-field view shows the sky around the bright star Fomalhaut in the constellation of Piscis Austrinus (The Southern Fish). This picture was created from photographs forming part of the Digitized Sky Survey 2. Fomalhaut lies about 25 light-years from the Earth and is surrounded by a huge disc of dust.
Credit: NASA, European Space Agency (ESA), and the Digitized Sky Survey 2
This scintillating image showcases the globular cluster NGC 6540 in the constellation Sagittarius, which was captured by the NASA/European Space Agency Hubble Space Telescope’s Wide Field Camera 3 and Advanced Camera for Surveys. These two instruments have slightly different fields of view—which determines how large an area of sky each instrument captures. This composite image shows the star-studded area of sky that was captured in both instruments’ field of view.
NGC 6540 is a globular cluster, a stable, tightly bound multitude of stars. The populations of these clusters can range from tens of thousands to millions of stars, all of which are trapped in a closely-packed group by their mutual gravitational attraction.
Distance: about 17,000 light years
The brightest stars in this image are adorned with prominent cross-shaped patterns of light known as diffraction spikes. These astronomical embellishments are a type of imaging artefact, meaning that they are caused by the structure of Hubble rather than the stars themselves. The path taken by the starlight as it enters the telescope is slightly disturbed by its internal structure, causing bright objects to be surrounded by spikes of light.
Hubble peered into the heart of NGC 6540 to help astronomers measure the ages, shapes, and structures of globular clusters towards the center of the Milky Way. The gas and dust shrouding the center of our galaxy block some of the light from these clusters, as well as subtly changing the colors of their stars. Globular clusters contain insights into the earliest history of the Milky Way, and so studying them can help astronomers understand how our galaxy has evolved.
Credit: European Space Agency (ESA)/Hubble & NASA, R. Cohen
This wide-field view shows the sky around the large but faint planetary nebula known as the Medusa Nebula. The full extent of the object can be seen, as well as many faint stars and, far beyond them, numerous distant galaxies.This picture was created from images forming part of the Digitized Sky Survey 2.
Distance:1,500 light years
Credit: European Southern Observatory (ESO)/Digitized Sky Survey 2
This close-up pan video shows the most detailed image ever taken of the Medusa Nebula (also known Abell 21 and Sharpless 2-274). It was captured using the European Southern Observatory’s Very Large Telescope (VLT) in Chile. As the star at the heart of this nebula made its final transition into retirement, it shed its outer layers into space, forming this colorful cloud. The image foreshadows the final fate of the Sun, which will eventually also become an object of this kind.
This video zoom takes you from a wide view of the sky deep into the constellation of Gemini (The Twins). There we see a strange object—the Medusa Nebula. As the star at the heart of this nebula made its final transition into retirement, it shed its outer layers into space, forming this colorful cloud. The image foreshadows the final fate of the Sun, which will eventually also become an object of this kind. The final very detailed image was captured using the European Southern Observatory’s Very Large Telescope in Chile.
Distance:1,500 light years
Credit: European Southern Observatory (ESO)/Digitized Sky Survey 2/N. Risinger
The European Southern Observatory’s Very Large Telescope (VLT) in Chile has captured a detailed image of the Medusa Nebula (also known Abell 21 and Sharpless 2-274). As the star at the heart of this nebula made its final transition into retirement, it shed its outer layers into space, forming this colorful cloud. The image foreshadows the final fate of the Sun, which will eventually also become an object of this kind.
This pan video gives a close-up look at a spectacular group of young stars—the open star cluster NGC 3766 in the constellation of Centaurus (The Centaur).
Distance:7,000 light years
Very careful observations of these stars by a group from the Geneva Observatory using the Swiss 1.2-meter Leonhard Euler Telescope at ESO's La Silla Observatory in Chile have shown that 36 of the stars are members of a new and unknown class of variable star.
This zoom video starts with a wide view of the Milky Way and ends with a close-up look at a spectacular group of young stars—the open star cluster NGC 3766 in the constellation of Centaurus (The Centaur).
Distance:7,000 light years
Very careful observations of these stars by a group from the Geneva Observatory using the Swiss 1.2-meter Leonhard Euler Telescope at ESO's La Silla Observatory in Chile have shown that 36 of the stars are members of a new and unknown class of variable star.
Credit: European Southern Observatory (ESO)/Nick Risinger/Hiro
This spectacular group of young stars is the open star cluster NGC 3766 in the constellation of Centaurus (The Centaur). Very careful observations of these stars by a group from the Geneva Observatory using the Swiss 1.2-meter Leonhard Euler Telescope at ESO’s La Silla Observatory in Chile have shown that 36 of the stars are of a new and unknown class of variable star.
Distance:7,000 light years
This image was taken with the MPG/ESO 2.2-meter telescope at the La Silla Observatory.
ESOcast 238 Light: When Betelgeuse, a bright orange star in the constellation of Orion, became visibly darker in late 2019 and early 2020, the astronomy community was puzzled. A team of astronomers have now published new research done with ESO's Very Large Telescope and Very Large Telescope interferometer that solves the mystery of Betelgeuse's dimming. This ESOcast Light summarizes the discovery.
Credit: European Southern Observatory (ESO)
Directed by: Herbert Zodet and Martin Wallner
Editing: Herbert Zodet
Web and technical support: Gurvan Bazin and Raquel Yumi Shida
Written by: Thea Elvin, Anna Purdue, Giulio Mazzolo and BƔrbara Ferreira
Footage and photos: ESO, P. Kervella, M. MontargĆØs et al., L. CalƧada, Digitized Sky Survey 2 Acknowledgement: E. Pantin, N. Risinger and P. HorĆ”lek
Scientific consultants: Paola Amico and Mariya Lyubenova
ESO Telescope Sees Surface of Supergiant Star Betelgeuse
ESOcast 217 Light: Using the European Southern Observatory's Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation Orion.
Credit: European Southern Observatory (ESO)
Directed by: Herbert Zodet
Editing : Herbert Zodet
Web and technical support: Gurvan Bazin and Raquel Yumi Shida
Written by: Caitlyn Buongiorno and BƔrbara Ferreira
Footage and photos: ESO, Kervella/M. MontargĆØs et al., acknowledgement: Eric Pantin, Digitized Sky Survey 2, M. Zamani and P. HorĆ”lek
Scientific consultants: Paola Amico and Mariya Lyubenova
This video takes the viewer from the constellation of Orion to the surface of the supergiant star Betelgeuse, which underwent an unprecedented dimming in late 2019 and early 2020. As we zoom closer to the star, we see the star's "flames"—clouds of dust captured in a dramatic image taken with the VISIR instrument on the European Southern Observatory's Very Large Telescope. The dot appearing at the end of the zoom is a March 2020 image taken with the SPHERE instrument on ESO's Very Large Telescope showing Betelgeuse’s visible surface, which has a size close to that of the orbit of Jupiter.
Credit: European Southern Observatory (ESO)/P. Kervella/M. MontargĆØs et al., Digitized Sky Survey 2
Red Supergiant Betelgeuse | European Southern Observatory
Betelgeuse is a red supergiant of spectral type M1-2 and one of the largest stars visible to the naked eye. It is usually the tenth-brightest star in the night sky and, after Rigel, the second-brightest in the constellation of Orion. This image is a color composite made from exposures from the Digitized Sky Survey 2 (DSS2). The field of view is approximatelly 2.0 x 1.5 degrees.
Distance:650 light years
Credit: European Southern Observatory (ESO)/Digitized Sky Survey 2
Astronomers using the European Southern Observatory’s Very Large Telescope (VLT) have directly observed granulation patterns on the surface of a star outside the Solar System—the ageing red giant Ļ1 Gruis. This remarkable new image from the PIONIER instrument reveals the convective cells that make up the surface of this huge star. Each cell covers more than a quarter of the star’s diameter and measures about 120 million kilometers across.
Ļ1 Gruis: Giant Bubbles on Red Giant Star’s Surface | ESO
ESOcast 144 Light: Astronomers using ESO’s Very Large Telescope (VLT) have directly observed granulation patterns on the surface of a star outside the Solar System—the ageing red giant Ļ1 Gruis.
A remarkable image from the PIONIER instrument reveals the convective cells that make up the surface of this huge star, which is 350 times larger than the Sun. Each cell covers more than a quarter of the star’s diameter and measures about 120 million kilometers across.
The ESOcast Light is a series of short videos bringing you the wonders of the Universe in bite-sized pieces.