Live Science on MSN
'Planet Y' theory hints at hidden Earth-size world lurking in the solar system — and it could be much closer to us than 'Planet Nine'
A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...
When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...
Live Science on MSN
Which planets are the youngest and oldest in our solar system?
There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?
The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.
The Daily Galaxy on MSN
Astronomers Stumble Upon Mysterious Object in the Outer Solar System
Astronomers have made an unexpected and groundbreaking discovery in our solar system—a ring system forming around Chiron, a ...
21d
3I/ATLAS, comet hurtling toward solar system, much bigger than previously thought, astronomers say
The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...
Jim Bell, astronomer and former president of The Planetary Society, explains the uniqueness of the interstellar 31/ATLAS ...
Wave-particle interactions across the solar system can have a wide range of effects though they are caused by the same set of ...
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