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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
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🌌 SpacePicture of a Day: Leopard Spots on Martian Rocks 🪐
What is creating these unusual spots? Light-colored spots on Martian rocks, each surrounded by a dark border, were discovered last year by NASA's Perseverance Rover currently exploring Mars. Dubbed leopard
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🌌 SpacePicture of a Day: A Rocket in the Sun 🪐
On the morning of September 24 a rocket crosses the bright solar disk in this long range telescopic snapshot captured from Orlando, Florida. That's about 50 miles north of its Kennedy Space Center launch
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🌌 SpacePicture of a Day: Saturn Opposite the Sun 🪐
This year Saturn was at opposition on September 21, opposite the Sun in planet Earth's sky. At its closest to Earth, Saturn was also at its brightest of the year, rising as the Sun set and shining above
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🌌 SpacePicture of a Day: GW250114: Rotating Black Holes Collide 🪐
It was the strongest gravitational wave signal yet measured -- what did it show? GW250114 was detected by both arms of the Laser Interferometer Gravitational-wave Observatory (LIGO) in Washington and Louisiana
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🌌 SpacePicture of a Day: NGC 6357: Cathedral to Massive Stars 🪐
How massive can a normal star be? Estimates made from distance, brightness and standard solar models had given one star in the open cluster Pismis 24 over 200 times the mass of our Sun, making it one of
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🌌 SpacePicture of a Day: Equinox at Saturn 🪐
On Saturn, the rings tell you the season. On Earth, today marks an equinox, the time when the Earth's equator tilts directly toward the Sun. Since Saturn's grand rings orbit along the planet's equator,
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🌌 SpacePicture of a Day: Equinox Sunset 🪐
Does the Sun set in the same direction every day? No, the direction of sunset depends on the time of the year. Although the Sun always sets approximately toward the west, on an equinox like tomorrow the
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🌌 SpacePicture of a Day: Gibbous vs Crescent 🪐
rly risers around planet Earth have enjoyed a shining crescent Moon near brilliant Venus, close to the eastern horizon in recent morning twilight skies. And yesterday, on September 19, skygazers watching
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🌌 SpacePicture of a Day: The NGC 6914 Complex 🪐
A study in contrasts, this colorful cosmic skyscape features stars, dust, and glowing gas in the vicinity of NGC 6914. The interstellar complex of nebulae lies some 6,000 light-years away, toward the
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🌌 SpacePicture of a Day: Comet C/2025 R2 (SWAN) 🪐
A new visitor from the outer Solar System, comet C/2025 R2 (SWAN) also known as SWAN25B was only discovered late last week, on September 11. That's just a day before the comet reached perihelion, its closest
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🌌 SpacePicture of a Day: Nebulas and Clusters in Sagittarius 🪐
Can you spot famous celestial objects in this image? 18th-century astronomer Charles Messier cataloged only two of them: the bright Lagoon Nebula (M8) at the bottom, and the colorful Trifid Nebula (M20)
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🌌 SpacePicture of a Day: New Comet SWAN25B over Mexico 🪐
A newly discovered comet is already visible with binoculars. The comet, C/2025 R2 (SWAN) and nicknamed SWAN25B, is brightening significantly as it emerges from the Sun's direction and might soon become
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🌌 SpacePicture of a Day: Star Trails over One-Mile Radio Telescope 🪐
The steerable 60 foot diameter dish antenna of the One-Mile Telescope at Mullard Radio Astronomy Observatory, Cambridge, UK, is pointing skyward in this evocative night-skyscape. To capture the dramatic
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🌌 SpacePicture of a Day: Lunar Eclipse in Two Hemispheres 🪐
September's total lunar eclipse is tracked across night skies from both the northern and southern hemispheres of planet Earth in these two dramatic timelapse series. In the northern hemisphere sequence
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🌌 SpacePicture of a Day: The Umbra of Earth 🪐
The dark, inner shadow of planet Earth is called the umbra. Shaped like a cone extending into space, it has a circular cross section most easily seen during a lunar eclipse. And on the night of September
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🌌 SpacePicture of a Day: The Great Lacerta Nebula 🪐
It is one of the largest nebulas on the sky -- why isn't it better known? Roughly the same angular size as the Andromeda Galaxy, the Great Lacerta Nebula can be found toward the constellation of the Lizard
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🌌 SpacePicture of a Day: Up from the Earth: Gigantic Jet Lightning 🪐
What's that rising up from the Earth? When circling the Earth on the International Space Station early in July, astronaut Nicole Ayers saw an unusual type of lightning rising up from the Earth: a gigantic
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🌌 SpacePicture of a Day: IRAS 04302: Butterfly Disk Planet Formation 🪐
This butterfly can hatch planets. The nebula fanning out from the star IRAS 04302+2247 may look like the wings of a butterfly, while the vertical brown stripe down the center may look like the butterfly's
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🌌 SpacePicture of a Day: Sardinia Sunset 🪐
When the sun sets on September 7, the Full Moon will rise. And on that date denizens around much of our fair planet, including parts of Antarctica, Australia, Asia, Europe, and Africa can witness a total
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🌌 SpacePicture of a Day: 47 Tucanae: Globular Star Cluster 🪐
Also known as NGC 104, 47 Tucanae is a jewel of the southern sky. Not a star but a dense cluster of stars, it roams the halo of our Milky Way Galaxy along with some 200 other globular star clusters. The
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