A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

Scientists have recently proposed the existence of “Planet Y,” a hidden Earth-sized world that could be lurking in our solar ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

A recent study by Princeton University astronomers suggests the possible existence of a previously undetected planet in our ...

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure if the gas is contained within a wispy atmosphere or being ejected into ...

Alex Knapp is a Forbes senior editor covering healthcare and science. The James Webb Space Telescope has its sights set on seven planets circling a red dwarf star called Trappist-1, about 40 ...

NEW YORK (AP) — Six planets are hanging out in the sky this month in what’s known as a planetary parade. Catch the spectacle while you can because it’s the last one of the year. These linkups happen ...

For all the talk about life across the cosmos, Earth remains the only confirmed example. That single data point makes your ...