Astronomy
- Astronomy
Planet collisions may have rearranged crowded solar systems
Solar systems discovered by Kepler with just one or two worlds may be remnants of planet families that were once far more crowded.
- Astronomy
Monster black hole lurks in the early universe
A black hole weighing the same as 12 billion suns is the most massive one known in the early universe.
- Planetary Science
Space simulations of 1960s focused on survival
50 years ago, space simulations focused on survival. Now, quality of life is critical, too.
- Cosmology
The past according to Planck: Cosmologists got a lot right
New results from the Planck satellite largely support cosmologists’ theories, but leave the door open for new discoveries.
- Astronomy
Pair of stars buzzed the solar system 70,000 years ago
Astronomers discover a binary system that made the closest known flyby of the sun.
- Astronomy
Closest star approach to the sun
Astronomers discover a binary system that made the closest known flyby of the sun.
- Astronomy
Giant hydrogen cloud headed for Milky Way
A high-speed hydrogen cloud on a crash course with the Milky Way appears to be an exotic interloper, preliminary data suggest.
- Astronomy
Top 10 messages to send to E.T.
Fears that sending signals to alien civilizations would provoke an invasion shouldn't prevent transmitting important messages.
- Astronomy
Stellar nursery gives birth to quadruplets
Four young stars, still in their cocoons, show that binary and other multiple star systems form together.
- Astronomy
Finding joy and inspiration in the pursuit of knowledge
Editor in Chief Eva Emerson ruminates on the power of knowledge, and the ways scientists are refining how we think about the aging human brain, far away comets and even the speed of light.
- Astronomy
White dwarf pair will trigger a supernova — in 700 million years
Astronomers found two white dwarfs with enough mass to explode as a supernova.
- Astronomy
First stars born later than thought
New results from the Planck mission indicate that the first stars began to shine 550 million years after the Big Bang.
