Last stop before leaving the solar system Sep 23, 2021

Last stop before leaving the solar system

Official telescopic confirmation of Neptune"s presence in our solar system came on September 23, 1846, and it was a big deal partly because Neptune is the only planet in our solar system not visible with the naked eye. Credit for this discovery inspired a dust-up in the international astronomy community, as scientists from both Britain and France claimed they had been the first to predict the existence and position of the eighth and most-distant planet in our solar system before it was seen through a telescope. Eventually peace was brokered, and credit is now shared between the two factions.

© NASA/JPL

palette

Today in History

Sep 23, 2018Ahh-tumn
Sep 23, 2019Stepping into autumn
Sep 23, 2020A tree of many memories
Sep 23, 2022Golden jellyfish in Jellyfish Lake, Palau
Sep 23, 2023Autumnal equinox
Sep 23, 2024Sea Otter Awareness Week
Sep 23, 2025A keel-billed toucan in Costa Rica

More Desktop Wallpapers:

Dec 1, 2025Antarctica Day
Feb 1, 2020Mapping courage in the Seventh Ward
Nov 23, 2021Fibonacci Day
May 23, 2025World Turtle Day
Aug 1, 2023National Mountain Climbing Day
Jul 28, 2019Road-trip worthy attraction in the heartland
Dec 3, 2021Frost on autumn leaves
Mar 1, 2025Womens History Month
Dec 19, 2022Northern cardinal in winterberry bush
Jul 20, 2021Fly me to the moon
Mar 29, 2023Manatee Appreciation Day
May 18, 2022International Museum Day
Jul 19, 2025National Moth Week
Mar 5, 2023Cherry blossom season in Tokyo
Jan 9, 2020Into the woods
Aug 7, 2022National Lighthouse Day
Mar 19, 2023Barn owl, England
Jun 13, 2020A gorge-ous mill in the Causses
Jun 4, 2019Breaking the fast for Eid
Dec 2, 2025Alaska National Interest Lands Conservation Act anniversary
May 16, 2018National Love a Tree Day
May 5, 2021The birthplace of Cinco de Mayo
Feb 5, 2024Western Monarch Day
Jan 21, 2022National Hug Day
Mar 30, 2025Sydney Harbour, New South Wales, Australia
Oct 24, 2022Diwali lights in Guwahati, India
Mar 1, 2023Womens History Month
May 28, 2023Tegallalang terrace farms in Ubud, Bali, Indonesia
Feb 17, 2024Black History Month
Mar 13, 2019A look at Uranus, seventh planet from the sun