A black hole as an invisible spot in space where gravity is so intense that nothing can escape it. Even light is trapped by this celestial body. Black holes can form when a star has died and collapsed in on itself, becoming incredibly dense.
Black holes are hard to detect, but special telescopes in space are able to detect them by studying the movement of stars and gas around them. Scientists believe the Milky Way galaxy may be home to numerous black holes, and the size of black holes can range from the size of an atom to more than 1 million times the size of the sun.Learn More
The name of Earth's natural satellite is the moon. In terms of size, the moon is not the biggest natural satellite in the solar system, but it is large and ranks fifth among the other moons. In fact, the moon is one of the largest satellites compared to its planet.Full Answer >
Space pollution pertains to the accumulation of manmade debris in outer space. Approximately 500,000 debris pieces, commonly referred to as "space junk," are tracked by the National Aeronautics and Space Administration, or NASA. The buildup of space junk orbiting the Earth presents an alarming threat to satellites, spacecrafts and the people living on the planet.Full Answer >
The ecliptic is the course the sun is observed to take from the point of a view of Earth as it appears to revolve around Earth in a line that is inclined with respect to the rotation axis at 23.50, according to Georgia State University’s Hyperphysics. The ecliptic intersects the celestial equatorial along the path between the equinoxes.Full Answer >
Space appears to be black because there is no light being reflected off molecules. On Earth, people see colors because the objects seen are reflecting the color back into the eyes of the viewer. This does not happen in space.Full Answer >