Planetary Science
- Planetary Science
Earth might once have resembled a hot, steamy doughnut
Newly proposed space objects called synestias are large, spinning hunks of mostly vaporized rock. They look like a jelly-filled doughnut.
- Planetary Science
New Horizons’ next target caught making a star blink
The team behind the spacecraft that visited Pluto has seen its next quarry blocking the light from a distant star.
- Planetary Science
Giant mud balls roamed the early solar system
The first asteroids may have been great balls of mud, which would solve some puzzling features of meteorites.
- Planetary Science
Here are Juno’s first close-ups of Jupiter’s Great Red Spot
The Juno spacecraft swooped just 9,000 kilometers above Jupiter’s Great Red Spot on July 10. Here are the first pictures.
- Planetary Science
Juno will fly a mere 9,000 km above Jupiter’s Great Red Spot
Juno is about to get up close and personal with Jupiter’s Great Red Spot.
- Planetary Science
Readers intrigued by Mars’ far-out birth
Readers sent feedback on the Red Planet's formation, jumping genes and more
- Planetary Science
The moon might have had a heavy metal atmosphere with supersonic winds
Heat from a glowing infant Earth could have vaporized the moon’s metals into an atmosphere as thick as Mars’, a new simulation shows.
- Astronomy
Kepler shows small exoplanets are either super-Earths or mini-Neptunes
The final catalog from the Kepler space telescope splits Earthlike exoplanets into two groups and pinpoints 10 new rocky planets in the habitable zone.
- Astronomy
Eclipse watchers catch part of the sun’s surface fleeing to space
A serendipitous eruption during a solar eclipse showed relatively cool blobs of plasma, wrapped in a million-degree flame, streaming from the sun.
- Planetary Science
See the latest stunning views of Jupiter
Once every 53 days, NASA’s Juno spacecraft zooms past Jupiter’s cloud tops. A new sequence of images reveals the encounter from Juno’s viewpoint.
- Planetary Science
Jupiter’s precocious birth happened in the solar system’s first million years
Jupiter formed within the first million years of the solar system, according to meteorite measurements.
- Astronomy
Scalding hot gas giant breaks heat records
KELT 9b’s sun blasts it with so much radiation that the planet’s dayside is hotter than most stars and its atmosphere is being stripped away.
