For this reason black holes are invisible to the eye, as lightless as the empty, dark space surrounding them. Scientists know ...

Sound as we know it does not exist in space. That’s because, on Earth, sound mainly travels to our ears via vibrating air molecules. Because space is a vacuum, meaning there is no matter at all ...

Science is full of weird and wacky things ... Some users also shared some cool space facts. For instance, u/Public_Breath6890 shared that 99.85 percent of the mass in our solar system is ...

It’s surprising that humans have maintained a continuous presence in space for so long, and on a structure so complex. On a clear night, it looks like a bright, fast-moving star. It’s surprising that ...

As three NASA astronauts and one cosmonaut splashed down off Florida’s coast, the US space agency shared some interesting ...

On March 13-14, 2025, a total lunar eclipse or "blood moon" will be visible across the Americas and beyond. Here are some odd ...

For more than 10 years, Cassini observed Saturn and its family of strange moons, providing us with a window into the unique worlds in our outer solar system. Here is a list of Saturn's 63 ...

The lack of gravity, higher radiation exposure, space-compatible diet, and other facts of life in orbit affected ... because sleeping in space feels weird. Your cancer risk increases.