Dark comets are comets that are so small, fast and/or chemically rare that they are difficult to see from Earth ...

NASA has unveiled a truly stellar gift: a new image of the star cluster NGC 602, located 200,000 light-years from Earth. This ...

NASA astronauts Sunita "Suni" Williams and Barry "Butch" Willmore were expected to return home in February after their ...

The cosmos began expanding with the Big Bang but then around 10 billion years later it strangely began to accelerate thanks ...

Dark matter's mass limit increased by an order of magnitude, impacting our understanding of the universe's invisible ...

In case dark matter didn't seem mysterious enough, a new study proposes that it could have arisen before the Big Bang.

The Nancy Grace Roman Space Telescope team at NASA has completed the integration of the telescope and its instruments onto ...

NASA's Scientific Balloon Program has returned to Antarctica's icy expanse to kick off the annual Antarctic Long-Duration ...

NASA will resume its annual long-duration balloon operation in Antarctica by launching two flights in mid-December for ...

Some of this stuff is known as mysterious dark matter, others are things like dark comets, which as their name suggests, are far more difficult to see from Earth than something like Tsuchinshan-Atlas.