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Tag: meteorites

The Moon-forming impact and late accretion on the rocky planets

July 1, 2022

TL;DR: The Moon is thought to have formed in Earth’s last giant impact with a planetary embryo about 100 million years after the start of planet formation. Highly-siderophile elements indicate that ~0.5% of Earth’s mass was accreted after that point. … More The Moon-forming impact and late accretion on the rocky planets

4 Comments The Moon-forming impact and late accretion on the rocky planets

Growth and migration of the giant planets

June 28, 2022

TL;DR: Most giant planets form in a bottom-up way, by first growing large cores and then piling gas on top. They migrate throughout their formation. Jupiter may have protected Earth from migrating ice giants. … More Growth and migration of the giant planets

6 Comments Growth and migration of the giant planets

From dust to planetesimals

June 25, 2022

TL;DR: planetesimals are mountain-sized rocks (sometimes with ice) that grow from clumps of drifting dust (“pebbles”). The two types of meteorites come from planetesimals that formed in different parts of the Solar System and remained separate. … More From dust to planetesimals

6 Comments From dust to planetesimals

The Solar System’s story

June 23, 2022

This blog series will discuss what we know (and don’t know) about the formation and evolution of our Solar System. … More The Solar System’s story

14 Comments The Solar System’s story
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