Latest News About Black Holes
A black hole is a location in space that possesses so much gravity, nothing can escape its pull, even light. Learn more about what black holes are and the latest news.
Many galaxies are members of groups or clusters. Since groups and clusters contain so many galaxies relatively close together, it should not be surprising that galaxies sometimes collide with each other.
Aircraft, robotic satellites and the International Space Station flow past us in orbits that look like "Rivers In The Sky"
How big is the universe? How do you measure distances in space? Radar and other methods can help you out.