NASA’s Astronomy Picture of the Day

In today's image, we see an aurora which shows in the shape of a Christmas Tree.

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In today's image, we see what is known as the Local Fluff - gas in the interstellar medium in the local neighborhood of the Sun.

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In today's image, we see 12 images of the sunset taken near Cairo, Egypt. These show the changing position of the Sun over the course of the year.

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In today's image, we see what is known as the Long Night Moon - the full moon that occurs closest to the Winter Solstice for this in the northern hemisphere.

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In today's image, we see the globular cluster known as Messier 2. Globular clusters are some of the oldest parts of out galaxy, often dating back more than 10 billion years.

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In today's image, we see the galaxy known as NGC 660 which is an example of a polar ring galaxy and could be two separate galaxies in the process of colliding.

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In today's image, we see the region around the heart Nebula which contains a supernova remnant as well as several planetary nebulae.

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In today's image, we see a large cliff on comet Churymov-Gerasimenko as imaged by the Rosetta spacecraft about a decade ago.

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In today's image, we see a number of the Geminid meteors as seen yesterday. These are associated with the orbit of the asteroid Phaethon whose orbit the Earth recently passed through.

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In today's image, we see the luna module, Challenger as it descends toward the lunar surface in 1972. This was the last time humans would walk on the moon although future missions are planned that wi…

In today's image, we see the spiral galaxy known as M51. This galaxy is in the process of interacting with another galaxy, enhancing the star formation rate within the galaxy.

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In today's image, we see the asteroid known as 3200 Phaethon. This asteroid is the source of the material that forms the Geminid meteor show which is peaking on December 13 of this year.

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In today's image, we see the nearby active galaxy known as Centaurus A. The galaxy is active because of a collision which funnels material into the central black hole, causing it to emit large amount…

In today's image, we see the meteor storm which occurred in 1833. A meteor storm is a very intense meteor shower with far more meteors visible.

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In today's image, we see the open star cluster known as the Pleiades. The cluster is moving through a dusty area of space which causes the blue reflection nebula around the stars.

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In today's image, we see the planet Saturn as imaged by the Hubble Space Telescope. Here we can see the auroral activity around the pole of the planet caused by charged particles from the Sun which a…

In today's image, we see an image showing the traditional crackling fireplace with a twist. This is the rockets from the Artemis I mission to the Moon from 2022 which provide the fire and most of the…

In today's image, we see a fireball as seen over Xuyi Station. This is where the comet Tsuchinshan-ATLAS was discovered.

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In today's image, we see two images of Jupiter which allow for a 3D view of the giant planet. You just need to stare between the two images and cross your eyes a bit.

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In today's image, we see an analemma. An analemma if formed generally by taking an image of the Sun from the exact same location at the same time every day to see how the position of the Sun changes.…