Earth's mantle is the thick layer of silicate rock between Earth's crust and its molten core, making up about 84% of our planet's volume. The mantle is predominantly solid but, on geologic time scales, it behaves as a viscous ...
Earth Sciences
Jul 11, 2022
0
41
The story of our solar system's origin is pretty well known. It goes like this: the sun began as a protostar in its "solar nebula" over 4.5 billion years ago. Over the course of several million years, the planets emerged ...
Astronomy
Jul 11, 2022
0
57
The violent event that likely preceded our solar system's formation holds the solution to a longstanding meteorite mystery, says new work from Carnegie's Alan Boss published in The Astrophysical Journal.
Astronomy
Jun 29, 2022
1
499
Evidence suggests that carbon nanotubes, tiny tubes consisting of pure carbon, could be forged in the envelopes of dust and gas surrounding dying stars. The findings propose a simple, yet elegant mechanism for the formation ...
Nanophysics
Jun 17, 2022
0
424
Just over 12 months ago, we were sitting at Woomera, in the Australian outback, waiting for a streak of light in the sky to testify that the Hayabusa2 spacecraft had returned from its voyage to collect a little piece of a ...
Planetary Sciences
Feb 11, 2022
0
1728
Earth and Mars were formed from material that largely originated in the inner solar system; only a few percent of the building blocks of these two planets originated beyond Jupiter's orbit. A group of researchers led by the ...
Planetary Sciences
Dec 23, 2021
2
547
The impactor believed to have wiped out the dinosaurs and other life forms on Earth some 66 million years ago likely came from the outer half of the main asteroid belt, a region previously thought to produce few impactors. ...
Astronomy
Jul 28, 2021
8
2110
Water is abundant in the solar system. Even beyond Earth, scientists have detected ice on the moon, in Saturn's rings and in comets, liquid water on Mars and under the surface of Saturn's moon Enceladus, and traces of water ...
Space Exploration
Apr 21, 2021
0
279
In a novel laboratory investigation of the initial atmospheres of Earth-like rocky planets, researchers at UC Santa Cruz heated pristine meteorite samples in a high-temperature furnace and analyzed the gases released.
Astronomy
Apr 15, 2021
2
838
Scientists from Russia and Germany studied the molecular composition of carbonaceous chondrites—the insoluble organic matter of the Murchison and Allende meteorites—in an attempt to identify their origin. Ultra-high resolution ...
Planetary Sciences
Apr 5, 2021
0
12
