and almost everything we discover about it only raises more questions. Although we are naturally drawn to the dramatic sights of supernovae, planetary nebulae, andconstellations in the night sky, the greatest mysteries of space are also on the ...
A nebula is a cloud of dust and gas in space.New stars are produced from nebulae. Black holes are areas in space,where gravity is so strong that nothing,not even light,can escape from them.Black holes are thought to be formed by collapsed stars. A supernova is an exploding star....
Planetary nebulae are the remains of sunlike stars that have reached the end of their red giant stage. Photo courtesy of NASA Sun-Earth Day 2010 The sun has been shining for about 4.5 billion years [source: NASA]. The size of the sun is a balance between the outward pressure ...
Planetary nebulae are the remains of sunlike stars that have reached the end of their red giant stage. Photo courtesy of NASA Sun-Earth Day 2010 The sun has been shining for about 4.5 billion years [source: NASA]. The size of the sun is a balance between the outward pressure ...
Planetary nebulae are the remains of sunlike stars that have reached the end of their red giant stage. Photo courtesy of NASA Sun-Earth Day 2010 The sun has been shining for about 4.5 billion years [source: NASA]. The size of the sun is a balance between the outward pressure ...
French astronomerCharles Messier(1730–1817) composed a database of objects known at the time as "nebulae," which included 103 objects at its final publication, though additional objects were added based on his personal notes. Many of these objects are often listed with their catalog name, such...
What are the key component elements found in stars? What is the difference between nebulae and planetary nebulae? What does the temperature and composition of a star tell us? How does radio astronomy work? How does a protostar become a star? Edwin Hubble categorized galaxies according to their...
What is the brightness and the temperature of planetary nebulae? What is the general range of temperatures of stars? What are white dwarf stars made of? How hot did the flames of the Saturn rocket get? What is a black dwarf? What is the temperature of Deneb? What is the approximate temp...
To celebrate the 25th anniversary of the launch of Hubble, we’ve collected a selection of gifs that show just how quickly our picture of the universe is improving. From the planets in our solar system, to galaxies and nebulae many millions of light years away, all are sharper than ever ...
The birth of a star occurs to the gravitational effects on nebulae. The dust and gas in a nebula begin to clump together in spots of larger gravitational pull. As more and more gas and dust gather, protostars are formed, and as these protostars reach a high enough temp...