The observation was made at the heart of the Helix Nebula ... variation every 2.9 hours. “We think this X-ray signal could be from planetary debris pulled onto the white dwarf,” said Dr ...

The star is actually one of two at the heart of NGC 1514, a nebula in the Taurus constellation about 1,500 light-years from Earth, NASA said in a news release. It is a white dwarf star that was ...

star-forming nebula and is close enough for astronomers to discern its individual stars. The NASA/ESA Hubble Space Telescope has made detailed observations of the dwarf galaxy NGC 2366.

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