Studying the next interstellar interloper with Webb

One of the most exciting findings in planetary science in recent years is the discovery of interstellar objects passing through our solar system. So far, astronomers have confirmed only two of these interlopers from other ...

Do forests lead to more or fewer clouds? It depends

Large-scale deforestation, forest restoration, forest fires, and droughts all have one thing in common: Most research on these topics focuses on forest ecosystems' impact on carbon storage and release. Other effects of forests ...

Interstellar comets like Borisov may not be all that rare

In 2019, astronomers spotted something incredible in our backyard: a rogue comet from another star system. Named Borisov, the icy snowball traveled 110,000 miles per hour and marked the first and only interstellar comet ever ...

Comet Catalina suggests comets delivered carbon to rocky planets

In early 2016, an icy visitor from the edge of our solar system hurtled past Earth. It briefly became visible to stargazers as Comet Catalina before it slingshotted past the Sun to disappear forevermore out of the solar system.

The sun may have started its life with a binary companion

A new theory published today in the Astrophysical Journal Letters by scientists from Harvard University suggests that the sun may once have had a binary companion of similar mass. If confirmed, the presence of an early stellar ...

A growing stellar system directly fed by the mother cloud

For the first time, astronomers have observed a conveyor belt from the outskirts of a star-forming dense cloud directly depositing material near a pair of young forming stars. Scientists at the German Max Planck Institute ...

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