Astronomy
- Astronomy
Fast-spinning young Earth pulled the moon into a yo-yo orbit
The early moon’s orbit created a cycle between lunar phases unlike the one seen nowadays.
- Astronomy
Super-Earths may form in two ways
Rocky planets much heavier than Earth may form in different ways.
- Astronomy
As many as nine new dwarf galaxies found outside Milky Way
A bevy of newly discovered satellite galaxies around the Milky Way could help astronomers study how galaxies form and the nature of dark matter.
- Computing
Concerns about drones, how to hunt exoplanets and more reader feedback
Readers discuss the potential impacts of human-made fliers and muse about the advantages a poker-playing computer program has over human opponents.
- Astronomy
Remote star clusters discovered on edge of Milky Way
Two newly discovered star clusters are the first ever seen at the remote edges of the Milky Way.
- Astronomy
Hubble telescope sees quadruple
A galaxy bends light to create four images of the same supernova.
- Astronomy
Supernova hurls star out of the galaxy
The fastest-moving star to leave the Milky Way might have been launched by a nearby exploding star.
- Astronomy
Hundreds of galaxies seen in a new 3-D view of the universe
A new instrument lets astronomers measure the distances to hundreds of galaxies at once, looking back across the age of the universe.
- 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.
