Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2022 August 17
The featured image shows a circular ring of stars that is a
projection of the central band of our Milky Way Galaxy. In the foreground
are rocks and cacti from the high desert in Chile.
Please see the explanation for more detailed information.

Stargate Milky Way
Image Credit & Copyright: Maxime Oudoux

You pass through a gate of stars twice a day. It is the spin of the Earth that propels you through the stargate. A faint band stretching across the sky, only visible in away from bright city lights, is what the central band of our Milky Way looks like. The central plane of the Milky Way can be seen in a wide-angle image from a dark place. A stereographic projection that causes the Milky Way to appear as a giant circular portal was used to create the featured picture. There is a faint stripe of zodiacal light inside the stargate-like arcs of our solar system. cacti and dry rocks are found in the rough terrain of the high desert of Chile, not far from the El Sauce Observatory and the Vera Rubin Observatory, which are expected to begin operations in 2024.

Tomorrow's picture: open space < | Archive | Submissions | Index | Search | Calendar | RSS | Education | About APOD | Discuss | >

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.


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Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2022 August 18
See Explanation. Clicking on the picture will download
the highest resolution version available.

Full Moon Perseids
Image Credit & Copyright: Juan Carlos Casado (Starry Earth, TWAN)

Explanation: The annual Perseid meteor shower was near its peak on August 13. As planet Earth crossed through streams of debris left by periodic Comet Swift-Tuttle meteors rained in northern summer night skies. But even that night's nearly Full Moon shining near the top of this composited view couldn't hide all of the popular shower's meteor streaks. The image captures some of the brightest perseid meteors in many short exposures recorded over more than two hours before the dawn. It places the shower's radiant in the heroic constellation of Perseus just behind a well-lit medieval tower in the village of Sant Llorenc de la Muga, Girona, Spain. Observed in medieval times, the Perseid meteor shower is also known in Catholic tradition as the Tears of St. Lawrence, and festivities are celebrated close to the annual peak of the meteor shower. Joining the Full Moon opposite the Sun, bright planet Saturn also shines in the frame at the upper right.

Tomorrow's picture: one Saturn year

< | Archive | Submissions | Index | Search | Calendar | RSS | Education | About APOD | Discuss | >

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC,
NASA Science Activation
& Michigan Tech. U.