IoTman's posts on decentralized web

iotman

2026-05-18 18:05

🌌 SpacePicture of a Day: Unraveling NGC 3169 🪐

Spiral galaxy NGC 3169 looks to be unraveling like a ball of cosmic yarn. It lies some 70 million light-years away, south of bright star Regulus toward the faint constellation Sextans. Wound up spiral

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iotman

science

2026-05-17 18:05

🌌 SpacePicture of a Day: NGC 1300: Barred Spiral Galaxy 🪐

Across the center of this spiral galaxy is a bar. And at the center of this bar is smaller spiral. And at the center of that spiral is a supermassive black hole. This all happens in the big, beautiful,

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iotman

science

2026-05-16 18:05

🌌 SpacePicture of a Day: Aurora Slathers Up the Sky 🪐

Like salsa verde on your favorite burrito, a green aurora slathers up the sky in this 2017 June 25 snapshot from the International Space Station. About 400 kilometers (250 miles) above Earth, the orbiting

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iotman

science

2026-05-15 18:05

🌌 SpacePicture of a Day: R3 PanSTARRS: An Orion Comet 🪐

Comet R3 PanSTARRS might be best remembered as an Orion comet. A key reason is because Comet C/2025 R3 (PanSTARRS) was near its most spectacular -- in terms of tail visibility -- when passing in front

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iotman

science

2026-05-14 18:05

🌌 SpacePicture of a Day: Messier Catalog at Uniform Scale 🪐

What are some of the most interesting astronomical objects you can see in the night sky? Armed with a good pair of binoculars or a small telescope, if you live in the Northern Hemisphere, you can look

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iotman

science

2026-05-13 18:05

🌌 SpacePicture of a Day: NGC 188: Old Cluster in the New General Catalog 🪐

The New General Catalog of star clusters and nebulae really isn't so new. In fact, it was published in 1888 - an effort by J. L. E. Dreyer to consolidate the work of astronomers William, Caroline, and

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iotman

science

2026-05-10 18:05

🌌 SpacePicture of a Day: Comet R3 PanSTARRS and Orion 🪐

Orion never had a sword like this. As Comet C/2025 R3 (PanSTARRS) heads out of the inner Solar System, it is putting on quite a show for long exposure cameras. Currently seen toward the constellation of

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iotman

science

2026-05-09 18:05

🌌 SpacePicture of a Day: Messier Craters in Stereo 🪐

Many bright nebulae and star clusters in planet Earth's sky are associated with the name of astronomer Charles Messier from his famous 18th century catalog. His name is also given to these two large and

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iotman

science

2026-05-08 18:05

🌌 SpacePicture of a Day: Comet R3 PanSTARRS Before Rigel 🪐

Which way is Comet R3 PanSTARRS going? Not towards the star at the top of the image, because that is Rigel, which, being far in the background, is unrelated to the comet. Not through the nebula in the

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iotman

science

2026-05-06 18:05

!Downvoted by users, Reveal content

🌌 SpacePicture of a Day: The Retrograde Dance of Saturn and Neptune 🪐

What does it mean for Saturn and Neptune to be in retrograde? Featured is a composite of images taken over 34 nights from May 2025 to February 2026 tracing Saturn (brighter, foreground) and Neptune (dimmer,

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iotman

science

2026-05-03 18:05

🌌 SpacePicture of a Day: Trifid Pillars and Jets 🪐

Dust pillars are like interstellar mountains. They survive because they are more dense than their surroundings, but they are slowly being eroded away by a hostile environment. Visible in the featured picture

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iotman

science

2026-05-02 18:05

🌌 SpacePicture of a Day: Seeing Titan 🪐

Shrouded in a thick atmosphere, the surface of Saturn's largest moon, Titan, is really hard to see. Small particles suspended in Titan's upper atmosphere cause an almost impenetrable haze, strongly scattering

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iotman

science

2026-05-01 18:05

🌌 SpacePicture of a Day: Markarian's Chain 🪐

Near the heart of the Virgo Galaxy Cluster, a string of galaxies known as Markarian's Chain stretches across this telescopic field of view. Anchored in the frame at bottom right by prominent lenticular

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iotman

science

2026-04-28 18:05

🌌 SpacePicture of a Day: CG 30: Cometary Globules 🪐

They're like mountain peaks, but they are forming stars. Bright-rimmed, flowing shapes gather near the center of this rich starfield toward the borders of the nautical southern constellations Puppis and

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iotman

science

2026-04-27 18:05

🌌 SpacePicture of a Day: Comet R3 PanSTARRS Behind Satellite Trails 🪐

Can you find the comet? Somewhere through this web of satellite trails is Comet C/2025 R3 (PanSTARRS), a bright visitor passing through the inner Solar System. Now, the orbiting satellites themselves only

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iotman

science

2026-04-26 18:05

🌌 SpacePicture of a Day: Mystic Mountain Monster being Destroyed 🪐

Inside the head of this interstellar monster is a star that is slowly destroying it. The huge monster, actually an inanimate series of pillars of gas and dust, measures light years in length. The in-head

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iotman

science

2026-04-25 18:05

🌌 SpacePicture of a Day: The Persistence of Sunlight 🪐

This seaside sunset offered a surreal experience, captured in a sea and skyscape from the west coast of Sardinia, Italy, planet Earth. The Daliesque scene is a composition of sequential exposures made

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iotman

science

2026-04-24 18:05

🌌 SpacePicture of a Day: Young Moon and Sister Stars 🪐

Sunlit arms of a crescent moon seem to embrace the faint lunar night side in this dramatic celestial view from planet Earth. The single telephoto exposure tracking the sky was captured on the night of

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iotman

science

2026-04-21 18:06

🌌 SpacePicture of a Day: Three Sky Arches over Snowy Alps 🪐

Why are there three arches across the sky instead of two? Last month, after being dropped off by a helicopter at a high mountain peak in the Alps near the Swiss Italian border, an adventurous astrophotographer

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iotman

science

2026-04-16 18:05

🌌 SpacePicture of a Day: South Celestial Tree 🪐

If you live in the northern hemisphere, you may have learned how to locate the North Star, Polaris, in the night sky. It can be used to find north, and it approximately marks the northern celestial pole.

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