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Astronomy Picture Of the Day (APOD)
APOD: 2023 February 22 B Our Increasingly Active Sun
22.02.2023
Our Sun is becoming a busy place. Only two years ago, the Sun was emerging from a solar minimum so quiet that months would go by without even a single sunspot. In contrast, already...
APOD: 2023 February 21 B Comet ZTF over Yosemite Falls
21.02.2023
They are both falling. The water in Yosemite Falls, California, USA, is falling toward the Earth. Comet ZTF is falling toward the Sun. This double cosmic cascade was captured late last month as fading Comet C/2022 E3 (ZTF) had just passed its closest to planet Earth. The orange star just over the falls is Kochab.
APOD: 2023 February 20 B NGC 1850: Not Found in the Milky Way
20.02.2023
There is nothing like this ball of stars in our Milky Way Galaxy. This is surprising because, at first glance, this featured image by the Hubble Space Telescope suggests that star cluster NGC 1850...
APOD: 2023 February 19 B Seven Dusty Sisters in Infrared
19.02.2023
Is this really the famous Pleiades star cluster? Known for its iconic blue stars, the Pleiades is shown here in infrared light where the surrounding dust outshines the stars. Here three infrared colors have been mapped into visual colors (R=24, G=12, B=4.6 microns).
Barred Spiral Galaxy NGC 1365 from Webb
18.02.2023
A mere 56 million light-years distant toward the southern constellation Fornax, NGC 1365 is an enormous barred spiral galaxy about 200,000 light-years in diameter. That's twice the size of our own barred spiral Milky Way.
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2023 CX1 Meteor Flash
17.02.2023
While scanning the skies for near earth objects Hungarian astronomer Kriszticn Scrneczky first imaged the meter-sized space rock now cataloged as 2023 CX1 on 12 February 2023 at 20:18:07 UTC. That was about 7 hours before it impacted planet Earth's atmosphere.
The Hydra Cluster of Galaxies
16.02.2023
Once upon a midnight dreary, while I pondered weak and weary, O'er volumes of astronomy and forgotten lore, I stumbled upon this snapshot, cosmic and eerie, A sight that filled my heart with awe and more.
APOD: 2023 February 15 B Airglow Sky over France
15.02.2023
This unusual sky was both familiar and unfamiliar. The photographer's mission was to capture the arch of the familiar central band of our Milky Way Galaxy over a picturesque medieval manor. The surprise was that on this January evening, the foreground sky was found glowing in a beautiful but unfamiliar manner.
APOD: 2023 February 14 B The Heart and Soul Nebulas
14.02.2023
Is the heart and soul of our Galaxy located in Cassiopeia? Possibly not, but that is where two bright emission nebulas nicknamed Heart and Soul can be found. The Heart Nebula, officially dubbed IC 1805 and visible in the featured image on the upper right, has a shape reminiscent of a classical heart symbol.
APOD: 2023 February 13 B Comet ZTF and Mars
13.02.2023
No, Comet ZTF is not going to hit Mars. Nicknamed the Green Comet for its bright green coma, C/2022 E3 (ZTF) did, however, pass almost in front of the much-more distant planet a few days ago, very near in time to when the featured picture was taken.
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