Main Page
Appearance
Wikimedia Commons |
Picture of the day
WAB BDhe 4/4 railcar no. 115 with a Bt control car headed down from Kleine Scheidegg to Wengernalp, Switzerland.
Media of the day
A video of the collapse of the 305-meter Arecibo Telescope on 3 December 2020.
The telescope was used for the earliest intentional interstellar radio message by humanity and Earth in 1974 to a star system about 25,000 light years from Earth, the Arecibo message. It was completed in 1963 and remained the world's largest single-aperture telescope until 2016. Its decommissioning was announced one month before its unintentional collapse.
Participating
|
Wiki Science Competition
Upload your photographs related to science for the Wiki Science Competition 2025. Learn more about the contest! Monthly photo challenge
Take some photos and upload them to meet our monthly thematic challenge, get inspiration and try new subjects! Learn more about the challenges! Highlights
If you are browsing Commons for the first time, you may want to start with Featured pictures, Quality images, Valued images or Featured media. |



