Sooty Star
Clouds of carbon surround the star CW Leonis in this Hubble Space Telescope image. The star is fusing helium in…
Dawn Lineup
All five of the easily visible planets of the solar system are on parade in the dawn sky. They're aligned…
Planetary Protection
This illustration depicts a proposed planetary defense system that could rip apart asteroids on a collision course with Earth. Known…
Growing Planet
Ribbons of hot gas spiral onto the surface of PDS 70b, a still-growing planet that orbits a newborn star in…
A Close Neighbor
An artist's concept depicts Proxima Centauri d, the third planet discovered orbiting Proxima Centauri, our closest stellar neighbor. Early observations…
Changing Sun
Bright magnetic storms and geysers of hot gas highlight this image of the Sun at ultraviolet wavelengths by Solar Dynamics…
Galaxies Aplenty
Thousands of galaxies crowd this Hubble Space Telescope image, which required hundreds of hours of observations to compile. The galaxies…
Lunar Tadpole
The bright tadpole-shaped area in this photograph of the Moon from Lunar Orbiter 2, a 1960s mission, is known as…
Stellar Graveyard
Terzan 5, a globular cluster in the constellation Sagittarius, contains hundreds of pulsars, which are the rapidly spinning corpses of…
Old Family
This Hubble Space Telescope image shows the core of Messier 5, a globular star cluster about 25,000 light-years away in…