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IoTman
@iotman
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ART, IOT and DIY
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2018-01-20 04:44
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iotman
science
1d
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🌌 SpacePicture of a Day: M74: A Grand Design Spiral 🪐
If not the most grand, then this spiral galaxy is at least one of the most photogenic. An island universe of about 100 billion stars, 32 million light-years away toward the constellation Pisces, M74 presents
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iotman
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2d
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🌌 SpacePicture of a Day: Eclipse Pair 🪐
clipses 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 new and full phases of the Moon, separated by just over 14
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iotman
science
3d
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🌌 SpacePicture of a Day: The Sky Turns Above Paranal 🪐
At the latitude of ESO's Paranal Observatory in Chile, about 25 degrees south, Earth's rotation moves the planet's surface eastward at over 1,500 kilometers per hour. And while that's faster than the speed
iotman
science
4d
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🌌 SpacePicture of a Day: Colorful Aurora over Icelandic Waterfall 🪐
What a sight to behold, when a night sky became filled with colors that appeared to rain over the Skógafoss waterfall in Iceland. This image was taken in a single 5 second exposure by the photographer
iotman
science
5d
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🌌 SpacePicture of a Day: JWST Images The Lion's Head Nebula 🪐
Are we looking at the future of our Sun? The James Webb Space Telescope captured today’s composite image of the Lion’s Head Nebula (NGC 2392) with its NIRCam and MIRI instruments. The Lion’s Head Nebula
iotman
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6d
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🌌 SpacePicture of a Day: Earth's Shadow Visualized with Lunar Eclipses 🪐
What’s creating this giant hole in space? This is not a black hole — it’s a shadow. It’s Earth’s shadow. Since at least the time of Aristotle, people have noted that Earth's dark shadow on the Moon during
iotman
science
9d
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🌌 SpacePicture of a Day: Mostly Perseids 🪐
Recorded the night of August 12-13, images from four dedicated meteor-monitoring cameras at an astronomical observatory in Czechia were aligned and combined to create this all-night, all-sky view. On that
iotman
science
11d
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🌌 SpacePicture of a Day: The Elephant's Trunk in Cepheus 🪐
Like an illustration in a galactic Just So Story, the Elephant's Trunk Nebula winds through the emission region and young star cluster complex IC 1396, in the high and far off constellation of Cepheus.
iotman
science
13d
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🌌 SpacePicture of a Day: Perseids from Perseus 🪐
This was a good year for the Perseids meteor shower. A key reason was the Moon was absent from lighting up Earth's night sky so that more meteors were visible than usual. Where was the Moon? It was busy
iotman
science
14d
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🌌 SpacePicture of a Day: A Golden Corona Eclipse 🪐
This total solar eclipse appeared not only poetically beautiful but scientifically interesting. Usually the solar corona appears white, and to some observers the corona of last week's total solar eclipse
iotman
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15d
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🌌 SpacePicture of a Day: Milky Way over Yellowstone 🪐
The Milky Way was not created by an evaporating lake. The colorful pool of water, about 10 meters across, is known as Silex Spring and is located in Yellowstone National Park in Wyoming, USA. Illuminated
iotman
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16d
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🌌 SpacePicture of a Day: Bright Perseids from Sweden 🪐
Known for its bright and fast meteors, the annual Perseid Meteor Shower comes to planet Earth's skies from a radiant in the heroic constellation Perseus. The popular northern summer celestial spectacle
iotman
science
17d
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🌌 SpacePicture of a Day: Total Solar Eclipse from Greenland 🪐
On August 12, the Moon's shadow reached out to touch our fair planet. Beginning in the Arctic Ocean, it swept along a narrow track that led the dark lunar umbra across parts of Greenland, Iceland, the
iotman
science
18d
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🌌 SpacePicture of a Day: Total Solar Eclipse Over Spain 🪐
On August 12th, 2026, the Moon totally eclipsed the Sun and cast its shadow across Siberia, Greenland, Iceland, Spain, and Portugal. Today’s image features two total solar eclipses viewed from Zaragoza,
iotman
science
19d
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🌌 SpacePicture of a Day: Perseids Over a little Planet 🪐
It looks like a view from the Little Prince's planet. The featured image is a throwback to the 2024 Perseid meteor shower, surrounded in this projection by the Bieszczady Mountains in Poland. Visible in
iotman
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20d
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🌌 SpacePicture of a Day: Six Moons of Saturn 🪐
How many moons does Saturn have? While the total will likely continue to grow, as of June 2026 the ringed gas giant had 293 confirmed moons. That's easily more than any other planet of the Solar System,
iotman
science
21d
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🌌 SpacePicture of a Day: Three Galaxy Pairs 🪐
ch of these pairs of galaxies is different. The two galaxies at the top are likely not interacting, at least presently. However, the top galaxy with the blue stripe, NGC 4650A, is a polar ring galaxy and
iotman
science
22d
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🌌 SpacePicture of a Day: Contemplating the Sun 🪐
Have you contemplated your home star recently? Featured here, a Sun partially eclipsed on the top left by the Moon is also seen eclipsed by earthlings contemplating the eclipse below. This spectacular
iotman
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23d
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🌌 SpacePicture of a Day: A Messier Moment for Tempel 2 🪐
Which of these is not a comet? You guessed it - the one on the right is a globular star cluster. The diffuse greenish coma of periodic comet 10P/Tempel 2 is at left in the frame. In fact the globular star
iotman
science
25d
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🌌 SpacePicture of a Day: New Sharpest Image of the Sun Uncovers Instability 🪐
What does the new sharpest image of our Sun show? Instability. To be clear, a certain kind of interactive process called the Kelvin-Helmholtz instability (KHI). This instability can create waves and swirls
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