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2025 Marks 100 Years Since Hubble Proved The Universe Is Vast With Galaxies Outside The Milky Way
On New Year’s Day, 1925, attendees at an astronomical conference heard one of the most influential scientific presentations of all time. It proved the Andromeda Nebula is immensely distant from Earth, ...
Sagittarius A, the intense radio source at the centre of our Galaxy, has no counterpart in the Andromeda Nebula although the structure of the nucleus is otherwise similar. The bright supernova of 1885 ...
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