Andromeda galaxy
© NASA/JPL-Caltec
Hey neighbour, it's World Space Week!
Space is a big, lonely place, so it's nice to know we have neighbours. The pictured Andromeda Galaxy is our Milky Way's closest – right next door at 2.5 million light-years away. Our cordial relationship with Andromeda goes back about 10 billion years to when both galaxies were still forming. But the trouble is brewing – Andromeda is on a collision course with the Milky Way, due for impact in 4 billion years. This neighbourhood's about to get rough…
Sometime in the 4 billion years we have left (preferably this World Space Week, October 4-10), we encourage you to turn your attention to the stars, whether on a trip to the countryside, the planetarium, or your backyard. World Space Week's 2021 theme is 'Women in Space' – so a shoutout to all women there too.
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