Here's a video created by astronaut Don Petiit aboard the International Space Station. It's a series of still photos of the Aurora taken from the vantage point of the High Frontier. Notice how thin our envelope of atmosphere is......humbling a little.
Here's the vid
Astronomers Will Get Gravitational Wave Alerts Within 30 Seconds
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Any event in the cosmos generates gravitational waves, the bigger the
event, the more disturbance. Events where black holes and neutron stars
collide can...
11 hours ago
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