What's up in
Universe
Astronomy, cosmology, stars, planets, black holes and the observatories revealing how the cosmos works.
Mercury map renders the innermost planet's geology in color
Electron behavior under extreme conditions described for the first time
Scientists find missing baryons -- half the universe's missing matter
Are Self-Replicating Starships Practical
The Scientific Quest to Explain Kepler's Most Enigmatic Find
Asymmetric sound absorption lets in the light
What Earth's climate system and topological insulators have in common
JILA's 3-D quantum gas atomic clock offers new dimensions in measurement
New telescope attachment allows ground-based observations of new worlds
Astronomers use IAC instrument to probe the origins of cosmic rays
