NASA’s Astronomy Picture of the Day

In today's image, we see LDN 1251, an example of a dark nebula in which stars are currently forming. in addition, several Herbig-Haro objects are one as well as a distant spiral galaxy.

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In today's image, we see M20 - The Trifid Nebula. This region contains three different types of nebulae - the dark, dusty nebulae, the blue reflection nebulae, and the pink emission nebulae.

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In today's image, we see the Pleiades star cluster in an image derived from 25 hours' worth of exposure to bring out some of the fine detail in the gas and dust around the cluster.

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In today's image, we see a diagram showing the orbit od an interstellar visitor to the solar system, known as 3I/ATLAS. This is a comet which comes from outside our solar system based on its trajecto…

In today's image, we see the north polar region of mars as constructed from laster altimeter data to give us a better view of this region of Mars.

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In today's image, we see the region known as Ou4, a relatively recently discovered nebula, seen in the blue light here, signifying the emission of oxygen atoms that have been ionized twice.

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In today's image, we see the spiral galaxy NGC 6946 and the open star cluster NGC 6939 in the same image. This is a very deep exposure, requiring 68 hours of imaging through a telescope.

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In today's image, we see the nova known as V462 Lupi. This is one of two novae currently visible in the southern sky. Another one is expected sometime that will be visible in the northern part of the…

In today's image, we see an image showing our Milky Way rising between the Otago Spires in New Zealand.

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In today's image, we see a "Little Planet" 360 degree image. Here we see the sunset, the Milky Way galaxy, as well as a deserted outpost and even the photographer in the image.

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In today's image, we see the galaxy known by the popular name of the Umbrella Galaxy. The "umbrella" is actually a tidal stream of material from a small satellite galaxy that is being torn apart by t…

In today's image, we see dark steaks on the plant Mars caused as a darker sand cascades down the sand dunes neat the Martian North Pole.

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In today's image, we see the far side of the Moon. This is the portion of our Moon that can never be seen from Earth because of the fact that the lunar rotation and revolution are equal.

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In today's image, we see the barred spiral galaxy known as Messier 109. This galaxy is similar in size and structure to our own Milky Way, but is located 60 million light years away from our galaxy.

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In today's image, we see the emission nebula known as the Seagull Nebula. This is part of a great emission nebula located in the direction of the constellation of Canis Major, the large dog.

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In today's image, we see one of the first images from the new Vera C. Rubin observatory. This shows a part of the sky near the constellation of Sagittarius including the Trifid Nebula.

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In today's image, we see the spiral galaxy known as M61. In the arms of tis galaxy, we see the telltale signs of star formation including the blue star clusters and pink ionized hydrogen regions.

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In today's image, we see W5, which is a star forming region. The central, hollowed out region, contains the older stars while the edges contains the stars just forming.

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In today's image, we see small spherules of hematite on the Martian surface as discovered by the Opportunity Rover back on 2004. These are another one of the pieces of evidence that liquid water once…

In today's image, we see analemmas that were taken on two different planets - Earth and Mars. An analemma shows the changing position of the Sun over the course of a year.

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