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The Alpha Centauri system – the nearest star system to Earth, only 4.3 light-years away – has been prominent in the dreams of space visionaries!

The Alpha Centauri system – the nearest star system to Earth, only 4.3 light-years away – has been prominent in the dreams of space visionaries!

At the far right, the famous Pleiades star cluster is some 400 light-years distant and around 15 light-years across.

At the far right, the famous Pleiades star cluster is some 400 light-years distant and around 15 light-years across.

3-Mile-Wide Asteroid To Pass Close To Earth @optivion #space

3-Mile-Wide Asteroid To Pass Close To Earth @optivion #space

Arp 147 contains the remnant of a spiral galaxy (right) that collided with the elliptical galaxy on the left. This collision has produced an expanding wave of star formation that shows up as a blue ring containing in abundance of massive young stars. These stars race through their evolution in a few million years or less and explode as supernovas, leaving behind neutron stars and black holes.

Arp 147 contains the remnant of a spiral galaxy (right) that collided with the elliptical galaxy on the left. This collision has produced an expanding wave of star formation that shows up as a blue ring containing in abundance of massive young stars. These stars race through their evolution in a few million years or less and explode as supernovas, leaving behind neutron stars and black holes.

#Nebula Abell 7 is some 1,800 light-years distant, just south of #Orion

#Nebula Abell 7 is some 1,800 light-years distant, just south of #Orion

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