What's up in
Universe
Astronomy, cosmology, stars, planets, black holes and the observatories revealing how the cosmos works.
NASA scientists confirm water vapor on Europa
Weakened black hole allows its galaxy to awaken
How to observe a 'black hole symphony' using gravitational wave astronomy
Hot electrons harvested without tricks
NASA finds Neptune moons locked in 'Dance of Avoidance'
Making planets in a rocket
Chemists use light to build biologically active compounds
NIST-led team develops tiny low-energy device to rapidly reroute light in computer chips
When galaxies rotate, size matters
Massive photons in an artificial magnetic field
