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NASA said it is a planetary nebula which is an expanding shell of gas around an aging or dying star.
Imagine being able to see more than half the planets of the solar system at once. That's what's going to happen for several days next week.
WASHINGTON (TND) — Black holes in space are getting bigger and stronger, according to NASA. A new survey of more than 100 galaxies by the space agency's Chandra X-ray Observatory "has uncovered signs that black holes are demolishing thousands...