Hey neighbor, it s World Space Week! Oct 4, 2021

Space is a big, lonely place, so it"s nice to know we have neighbors. The pictured Andromeda galaxy is our Milky Way"s closest neighbor—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 trouble is brewing: Andromeda is on a collision course with the Milky Way, due for impact in 4 billion years. This neighborhood"s about to get rough…

© NASA/JPL-Caltech

palette

Today in History

Oct 4, 2018From Sputnik to extraterrestrial storms
Oct 4, 2019World Space Week begins
Oct 4, 2020Infrared Jupiter, erupting Io
Oct 4, 2022World Space Week
Oct 4, 2023World Space Week
Oct 4, 2024World Space Week begins
Oct 4, 2025World Space Week

More Desktop Wallpapers:

May 6, 2024The Roaches ridge in the Peak District, England
Aug 6, 2025Kalalau Beach on the Nā Pali Coast, Kauai, Hawaii
Feb 21, 2019Sounds of Bach come to Bath
Nov 14, 2020Decorating for Diwali
Oct 3, 2019Love on ice
Jul 27, 2023Arc de Triomphe du Carrousel and the Louvre Pyramid
Jun 20, 2018Today is World Refugee Day
Mar 10, 2026Bláhver, Hveravellir, Iceland
May 7, 2020Where the wildflowers grow
Apr 22, 2021Gazing down on planet Earth
Apr 18, 2023International Day for Monuments and Sites
Feb 7, 2018The Kelpies statues in Falkirk, Scotland
Apr 20, 2018No, it s not a leaf. Happy Look-alike Day
Jan 21, 2018Red squirrel in Cairngorms National Park, Scotland
Jan 21, 2024Squirrel Appreciation Day
Apr 20, 2023Juniper Springs, Florida
Mar 18, 2022Holi festival
May 4, 2022Star Wars Day
Dec 22, 2025The Nutcracker performed by the Turkish State Opera and Ballet in Türkiye
May 16, 2025Endangered Species Day
Jun 20, 2022Pollinator Week
Jun 6, 2023D-Day remembered
Dec 3, 2019It’s Giving Tuesday
Sep 7, 2020Take a break! It s Labor Day!
Nov 16, 2023World Philosophy Day
Sep 22, 2022First day of autumn
Aug 30, 2021Behold the perfect cone
Mar 8, 2019‘Think equal, build smart, innovate for change’
Sep 25, 2025Chittorgarh Fort, Rajasthan, India
Aug 10, 2023World Lion Day