Nasa Star Study Page 3
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3Black Holes
If the collapsing core is larger than ________ solar masses, it collapse completely to form a __________
_________________. This is so __________ and its gravity is so strong that nothing can escape it – not even
light. Black holes can only be discovered _________. These observations are possible because the
______________________ field of a black hole is so powerful that any nearby material will be dragged into it.
When this happens, the matter is heated up and emits large quantities of X-rays and _______________ that
indicate its presence.
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