Planetary Formation

The Sun is Mellow Yellow Today. Billions of Years Ago? Not So Much

Planetary formation theory has been undergoing a lot of changes recently, with an ever expanding litany of events that can…

11 months ago

Does Mercury Have a big Iron Core Because it’s so Close to the Sun’s Magnetic Field?

Magnetic fields are great for lots of things - directing explorers, levitating trains, and containing nuclear fusion reactions are just…

11 months ago

Astronomers see an Accretion Disk Where Planets are About to Form

Planet formation is notoriously difficult to study.  Not only does the process take millions of years, making it impossible to…

11 months ago

Magnetic Fields Help Shape the Formation of New Planets

In all of scientific modeling, the models attempting to replicate planetary and solar system formation are some of the most…

1 year ago

Exoplanetary System Found With 6 Worlds in Orbital Resonance

200 light-years away from Earth, there's a K-type main-sequence star named TOI (TESS Object of Interest) 178. When Adrian Leleu,…

1 year ago

Pluto and Other Kuiper Belt Objects Started Out With Water Oceans, and Have Been Slowly Freezing Solid for Billions of Years

It seems unlikely that an ocean could persist on a world that never gets closer than 30 astronomical units from…

2 years ago

More Pictures of Planet-Forming Disks Around Young Stars

Astronomy is advancing to the point where we can see planets forming around young stars. This was an unthinkable development…

2 years ago

Are the Gaps in These Disks Caused by Planets?

Astronomers like observing distant young stars as they form. Stars are born out of a molecular cloud, and once enough…

2 years ago

Mars Was Hit By a Lot of Protoplanets Early in its History, Taking Longer to Form than Previously Thought.

There are around 61,000 meteorites on Earth, or at least that's how many have been found. Out of those, about…

2 years ago

Planets Started Out From Dust Clumping Together. Here’s How

A new study by a team of German physicists and an American biomedical engineer has solved a long-standing problem in…

2 years ago