A ring or circle of light around the sun or moon is called a halo by scientists.
Hubble helped change our cosmology: our idea of the universe as a whole.
A mysterious and largely unknown dark energy is thought to pervade our universe. A telescope in West Texas is poised to survey a million galaxies, to explore it.
Astronauts are spending a year aboard the International Space Station, and researchers are looking at what happens to their bodies at the molecular level.
Kepler-438b – 470 light years from Earth – ranks highest on the Earth Similarity Index. But radiation from its violent parent star makes it uninhabitable.
No Mars rover has yet visited a sand dune, as opposed to smaller sand ripples or drifts. Curiosity will visit actual Mars dunes in the next few days.
Here are all the details you need for 2015’s Leonid meteor shower, peaking on the morning of November 18.
Astronomers had not considered the effect of variable stars on the light of distant galaxies. A new technique lets them measure the galaxies’ “heartbeats.”
The famous Leonid shower is coming up. Follow the links in this post to learn more about meteor showers for the rest of 2015.
Anniversary of the first radio message intentionally beamed outward. What do you think? Should we be advertising our presence in space?