Bad Neighbor
A black hole about 15 times as massive as the Sun strips gas away from a companion star in this…
Stormy Skies
A hexagonal storm system perches atop the planet Saturn in this 2013 image from the Cassini spacecraft. The system, which…
Last Gasp
An expanding cloud of gas and dust forms a colorful ring around a dying star in this Hubble Space Telescope…
Disappearing Sun
A sequence of photographs shows the progress of the total solar eclipse of August 21, 2017, as the Moon passed…
Colorful Lightning
“Red sprites” (near center) blast upward from a thunderstorm in this view from the International Space Station. The Moon is…
Super Planet
An artist’s concept depicts one scenario for the surface of Barnard’s Star b, a planet orbiting one of our closest…
Reconnoitering the Moon
The Sun illuminates the rim of Shackleton Crater at the Moon’s south pole in this image from Lunar Reconnaissance Orbiter…
Crowded Cluster
This Hubble Space Telescope view shows the crowded core of Messier 10, a globular star cluster in the constellation Ophiuchus.…
Nasty Outburst
An outburst of charged particles known as a coronal mass ejection erupts from the surface of the Sun in this…
Scaled-Up Solar System
The Vega system may be somewhat like a scaled-up version of our own solar system, as shown in this diagram.…