Full Mercury Solar Transit 2016: For 7.5 hrs today, Mercury was visible as a tiny black dot crossing the sun! | NASA's Solar Dynamic Observatory

#ICYMI: Here's the full #MercuryTransit. For 7.5 hrs today, Mercury was visible as a tiny black dot crossing the sunhttps://t.co/sYXWe5NufG

— NASA (@NASA) May 9, 2016

Set sail down the Belize coastline, enjoy the coral reefs along the way. | U.S. Astronaut Jeff Williams | International Space Station

Set sail down the Belize coastline, enjoy the coral reefs along the way.https://t.co/RsJjL6KobU

— Jeff Williams (@Astro_Jeff) May 7, 2016

Fantastic Belize barrier reefs, find your favorite region. Spotting coral reefs is a fun past time of mine. | U.S. Astronaut Jeff Williams | International Space Station

Fantastic Belize barrier reefs, find your favorite region. Spotting coral reefs is a fun past time of mine. pic.twitter.com/L44bucAwOo

— Jeff Williams (@Astro_Jeff) May 7, 2016

Thoughts are with all those affected by the fires—Fort McMurray, Alberta | ESA Astronaut Tim Peake | International Space Station

Thoughts are with all those affected by the fires - Fort McMurray, #Alberta pic.twitter.com/3Rav8m3Yn5

— Tim Peake (@astro_timpeake) May 6, 2016

The Great Salt Desert in eastern Iran has some incredible looking geologic structures known as salt domes. | U.S. Astronaut Jeff Williams | International Space Station

The Great Salt Desert in eastern Iran has some incredible looking geologic structures known as salt domes. pic.twitter.com/3juQcOxUGL

— Jeff Williams (@Astro_Jeff) May 4, 2016

Sunglint on lakes in Canada near Ottawa & Montreal | U.S. Astronaut & Station Commander Tim Kopra | International Space Station

Sun glint on lakes in @Canada near @ottawacity and @MTL_Ville from @Space_Station #CitiesFromSpacehttps://t.co/z1yUelR1RB

— Tim Kopra (@astro_tim) May 5, 2016

SpaceX CRS-8 | First Stage Landing on Drone Ship at Sea

Singapore at night | International Space Station

March 2016 Solar Eclipse: A Total Celestial Wonder | NASA

Solar Eclipse: View from Tidore, Indonesia | Credit: Constantine Emmanouilidi

March 2016 Eclipse and the Moon's Orbit | NASA

March 2016 Eclipse: Earth, Moon and Sun | NASA

Live NASA TV coverage of tonight's total solar #Eclipse2016 over Southeast Asia starts at 8pm ET. | Watch: www.nasa.gov/ntv

Path of March 2016 Total Solar Eclipse (Animation) | NASA

NASA ScienceCasts: Indonesian Solar Eclipse

Celebrating International Women's Day | NASA | Four women in space at the same time: First time ever in 2010