A new study disputes the prevailing hypothesis on why Mercury has a big core relative to its mantle (the layer between a planet's core and crust). For decades, scientists argued that hit-and-run collisions with other bodies ...
Planetary Sciences
Jul 02, 2021
74
1329
Planetary scientists estimate that each year, about 500 meteorites survive the fiery trip through Earth's atmosphere and fall to our planet's surface. Most are quite small, and less than 2% of them are ever recovered. While ...
Space Exploration
Jul 09, 2021
0
207
The supermassive black hole at the center of our Milky Way galaxy, Sagittarius A*, is by far the closest such object to us, about 27,000 light-years away. Although it is not nearly so active or luminous as other galactic ...
Astronomy
Jul 12, 2021
100
725
A research team co-led by UCL has solved a decades-old mystery as to how Jupiter produces a spectacular burst of X-rays every few minutes.
Planetary Sciences
Jul 09, 2021
29
8222
The Juno Waves instrument "listened" to the radio emissions from Jupiter's immense magnetic field to find their precise locations.
Planetary Sciences
Jul 16, 2021
22
431
An unknown methane-producing process is likely at work in the hidden ocean beneath the icy shell of Saturn's moon Enceladus, suggests a new study published in Nature Astronomy by scientists at the University of Arizona and ...
Astronomy
Jul 07, 2021
7
1179
In 2011, scientists confirmed a suspicion: There was a split in the local cosmos. Samples of the solar wind brought back to Earth by the Genesis mission definitively determined oxygen isotopes in the sun differ from those ...
Astronomy
Jul 05, 2021
0
2948
In the vicinity of black holes, space is so warped that even light rays may curve around them several times. This phenomenon may enable us to see multiple versions of the same thing. While this has been known for decades, ...
Astronomy
Jul 12, 2021
24
4182
On June 7, 2021, NASA's Juno spacecraft flew closer to Jupiter's ice-encrusted moon Ganymede than any spacecraft in more than two decades. Less than a day later, Juno made its 34th flyby of Jupiter, racing over its roiling ...
Planetary Sciences
Jul 14, 2021
1
3680
There will be all sorts of risks for any future colonists on Mars, such as extreme weather and temperatures, radiation, and the human physiological problems associated with living in with decreased gravity. But another issue ...
Space Exploration
Jun 25, 2021
1
653
