The origin of Mercury, the closest planet to the sun, is mysterious in many ways. It has a metallic core, like Earth, but its core makes up a much larger fraction of its volume—85% compared to 15% for Earth.
Planetary Sciences
Jul 10, 2023
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250
Wake up early this weekend to catch a celestial sight: Five planets will line up in the sky before sunrise on Saturday.
Planetary Sciences
Jun 16, 2023
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111
Keep an eye to the sky this week for a chance to see a planetary hangout.
Planetary Sciences
Mar 26, 2023
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97
More than half the solar system's planets will align Monday in a rarely seen spectacle, arcing across a corner of the night sky.
Astronomy
Mar 23, 2023
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73
Sunsets provide some of the most beautiful natural imagery anywhere on Earth. People flock from all over to see sunsets at specific places at specific times, such as when they perfectly align down a street in Manhattan. But ...
Planetary Sciences
Mar 20, 2023
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31
Simulations of the formation of the solar system have been largely successful. They are able to replicate the positions of all the major planets along with their orbital parameters. But current simulations have an extreme ...
Planetary Sciences
Feb 2, 2023
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37
While observing the star system HD 23472 with the ESPRESSO spectrograph (ESO), a team led by Instituto de Astrofísica e Ciências do Espaço's (IA3) researcher Susana Barros (IA & Dep. de Física e Astronomia—Faculdade ...
Astronomy
Sep 27, 2022
0
45
As elementary schoolers, we learned the order of the planets. Maybe your teacher even had a snappy mnemonic like "My Very Educated Mother Just Served Us Nine Pizzas" or "My Very Educated Mother Just Served Us Nachos" after ...
Planetary Sciences
Sep 12, 2022
4
56
Using data collected over two decades ago, scientists from the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, have compiled the first complete map of hydrogen abundances on the Moon's surface. The map ...
Space Exploration
Jul 20, 2022
0
78
With future space exploration in mind, a Cornell-led team of astronomers has published the final maps of Titan's liquid methane rivers and tributaries—as seen by NASA's late Cassini mission—so that may help provide context ...
Space Exploration
Oct 18, 2021
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