The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.

When 1I/'Oumuamua was first spotted in 2017, astronomers quickly determined that it came from outside the solar system. But although it was initially classified as a comet from another star system, it ...

The outer solar system is a vast and mysterious place that could be harboring hidden objects we know almost nothing about — from the elusive Planet Nine and baby black holes to interstellar visitors ...

IMAP mission will explore our solar system's protective heliosphere and will also help us develop a better understanding of ...