The Helix Nebula, located 650 light-years from Earth, has baffled scientists for decades. The planetary nebula was created by ...
At the heart of the Carina Nebula, about 7,500 light-years away, lie two massive stars: WR 25 and Tr16-244. Positioned in the ...
For over forty years, astronomers have been baffled by X-rays from the white dwarf at the center of the Helix Nebula. A white ...