Brilliant streaks of green, purple and pink lit up skies across Canada and many northern U.S. states on Monday night.
Armed with a NASA online app and a little imagination, you can see for yourself how bright noon on Pluto actually is.
It’s been a bumpy ride for a prototype solar sail spacecraft, which was put into orbit two weeks ago by the Atlas 5 rocket that carried the Air Force’s X-37B robotic space plane.
The Earth and Mars will be on opposite sides of the sun this month, meaning we'll lose contact with our beloved Mars rovers and orbiters.
A rainbow-like halo surrounded the sun over Mexico City on Thursday, an optical phenomenon that triggered a social media frenzy.
Astronomers studying stars like our sun that are known to generate powerful 'superflares' have also discovered that these superflares are likely associated with monster 'starspots.'
This beautiful portrait of our nearest star was captured by NASA's Solar Dynamics Observatory (SDO), picking out the powerful and elegant loops of magnetized plasma reaching high into the sun's corona.
Astronomers have taken a census of distant spiral galaxies to help us understand what our Milky Way may have looked like in the distant past, also providing us with an invaluable look at the evolution of our own solar system.
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