Solar system terrestrial planets as a research area focuses on the comparative study of Mercury, Venus, Earth, and Mars to understand the formation, differentiation, and evolution of rocky planets. It integrates planetary geology, geophysics, geochemistry, atmospheric science, and orbital dynamics to investigate crust–mantle–core structures, volcanic and tectonic processes, surface–atmosphere interactions, and volatile and climate histories. The field relies heavily on spacecraft missions, remote sensing, in situ measurements, laboratory analyses of analog materials, and numerical modeling to constrain accretion processes, interior dynamics, habitability conditions, and the broader context of terrestrial exoplanets.
After its formation, the moon may have been the scene of such immense volcanic activity that its entire crust melted several times and was completely churned through. At that time, the moon orbited significantly closer to ...
Planetary Sciences
Dec 18, 2024
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2930
More than a hundred years ago, astronomer Percival Lowell made the case for the existence of canals on Mars designed to redistribute water from the Martian ice caps to its lower, drier latitudes. This necessarily meant the ...
Astrobiology
Dec 16, 2024
1
75
Could humans expand out beyond their homeworld and establish settlements on the planet Mars? The idea of settling the red planet has been around for decades. However, it has been seen by skeptics as a delusion at best and ...
Space Exploration
Dec 12, 2024
6
65
In the next decade, researchers will start probing the atmosphere of planets as small as Earth and Venus orbiting nearby stars. But although these two solar system planets are similar in size and bulk density—so that some ...
Astronomy
Dec 5, 2024
0
81
On Sunday 1 December 2024, BepiColombo flew past the planet Mercury for the fifth time, readying itself for entering orbit around the solar system's mysterious innermost planet in 2026.
Space Exploration
Dec 2, 2024
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58
A team of astronomers has found that Venus has never been habitable, despite decades of speculation that our closest planetary neighbor was once much more like Earth than it is today.
Astrobiology
Dec 2, 2024
2
355
The moons of Mars are garnering increased attention, not only because they could provide a view of the solar system's past but also because they could provide invaluable staging areas for any future human settlement on Mars ...
Space Exploration
Dec 2, 2024
0
26
Instruments aboard robotic landers have measured seismicity on the moon and Mars, helping researchers learn about the inner workings of those celestial bodies. But the internal makeup of Venus is still not known, in part ...
Planetary Sciences
Nov 26, 2024
0
43
When NASA's Voyager 2 flew by Uranus in 1986, it captured grainy photographs of large ice-covered moons. Now nearly 40 years later, NASA plans to send another spacecraft to Uranus, this time equipped to see if those icy moons ...
Planetary Sciences
Nov 25, 2024
0
67
Water is ubiquitous on Earth—about 70% of Earth's surface is covered by the stuff. Water is in the air, on the surface and inside rocks. Geologic evidence suggests water has been stable on Earth since about 4.3 billion years ...
Planetary Sciences
Nov 25, 2024
0
85
