The resulting densely compacted mass is known as a black hole because no light can escape its intense gravitational field. White Dwarfs These are extremely dense objects in the universe that radiate energy and matter. Quasars Quasars are extremely bright, shining objects at the center of some distant galaxies. Most quasars are the size of the solar system yet can be a trillion times brighter than the sun . Nebulae are huge clouds of dust and gas where stars may have been born.
Some nebulae are the remains of stars that have exploded.
The California Nebula is named for its shape, which resembles that of the state of California . All Rights Reserved worldwide.