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Astronomy Picture Of the Day (APOD)
APOD: 2025 January 7 Б A New Years Aurora and SAR Arc
6.01.2025
It was a new year, and the sky was doubly red. The new year meant that the Earth had returned to its usual place in its orbit on January 1, a place a few days before its closest approach to the Sun.
APOD: 2025 January 6 Б Colliding Spiral Galaxies from Webb and Hubble
5.01.2025
Billions of years from now, only one of these two galaxies will remain. Until then, spiral galaxies NGC 2207 and IC 2163 will slowly pull each other apart, creating tides of matter, sheets of shocked gas, lanes of dark dust, bursts of star formation, and streams of cast-away stars.
APOD: 2025 January 5 Б Rocket Launch as Seen from the International Space Station
4.01.2025
Have you ever seen a rocket launch -- from space? A close inspection of the featured time-lapse video will reveal a rocket rising to Earth orbit as seen from the International Space Station (ISS).
Welcome to Perihelion
3.01.2025
Earth's orbit around the Sun is not a circle, it's an ellipse. The point along its elliptical orbit where our fair planet is closest to the Sun is called perihelion. This year perihelion is today, January 4, at 13:28 UTC, with the Earth about 147 million kilometers from the Sun.
Eclipse Pair
2.01.2025
Eclipses tend to come in pairs. Twice a year, during an eclipse season that lasts about 34 days, Sun, Moon, and Earth can nearly align. Then the full and new phases of the Moon, separated by just over 14 days, create a lunar and a solar eclipse.
Solar Analemma 2024
1.01.2025
Recorded during 2024, this year-spanning series of images reveals a pattern in the seasonal drift of the Sun's daily motion through planet Earth's sky. Known to some as an analemma, the figure-eight curve was captured in exposures taken only at 1pm local time on clear days from Kayseri, Turkiye.
APOD: 2025 January 1 Б Alpha Centauri: The Closest Star System
31.12.2024
The closest star system to the Sun is the Alpha Centauri system. Of the three stars in the system, the dimmest -- called Proxima Centauri -- is actually the nearest star. The bright stars Alpha Centauri...
APOD: 2024 December 31 Б The Twisted Disk of NGC 4753
30.12.2024
What do you think this is? HereБs a clue: it's bigger than a bread box. Much bigger. The answer is that pictured NGC 4753 is a twisted disk galaxy, where unusual dark dust filaments provide clues about its history.
APOD: 2024 December 30 Б M27: The Dumbbell Nebula
29.12.2024
Is this what will become of our Sun? Quite possibly. The first hint of our Sun's future was discovered inadvertently in 1764. At that time, Charles Messier was compiling a list of diffuse objects not to be confused with comets.
APOD: 2024 December 29 Б Methane Bubbles Frozen in Lake Baikal
28.12.2024
What are these bubbles frozen into Lake Baikal? Methane. Lake Baikal, a UNESCO World Heritage Site in Russia, is the world's largest (by volume), oldest, and deepest lake, containing over 20% of the world's fresh water.
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