Space.com on MSN3d
2 newly found exoplanets reignite an outstanding question about our solar system
The two exoplanets, or planets outside of our solar system, orbit a star called TOI-1453, which is slightly cooler and ...
Astronomy on MSN4d
Our solar system is not as unusual as we thought
A new classification scheme may help us better understand planet formation — including the history of our own family of worlds.
Scientists Observe Carbon Dioxide on Planets Outside the Solar System for the First Time
The findings provide strong evidence that four giant exoplanets 130 light-years from Earth formed much like Jupiter and ...
Gargantuan Globes
Scientists estimate there are ~1 septillion (1 followed by 24 zeros) planets in the observable universe. This figure is based ...
Atmospheres of new planets might have unexpected mixtures of hydrogen and water
All planets are made of gas, ice, rock and metal, and models of how planets form usually assume that these materials don't ...
Earth hit by meteorite that originated from a non-existent planet
The solar system was packed with 50 to 100 protoplanets billions of years ago. Not all of them lived to tell the tale of the ...
A Meteorite Fell to Earth From a Planet That Doesn’t Exist
This is particularly puzzling, as a vast majority of meteorites can be traced to some well-known parent body—whether that be ...