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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: NGC 4565: Galaxy on Edge 🪐
Magnificent spiral galaxy NGC 4565 is viewed edge-on from planet Earth. Also known as the Needle Galaxy for its narrow profile, bright NGC 4565 is a stop on many telescopic tours of the northern sky, in
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🌌 SpacePicture of a Day: Cir X-1: Jets in the Africa Nebula 🪐
How soon do jets form when a supernova gives birth to a neutron star? The Africa Nebula provides clues. This supernova remnant surrounds Circinus X-1, an X-ray emitting neutron star and the companion star
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🌌 SpacePicture of a Day: Callisto: Dirty Battered Iceball 🪐
Its surface is the most densely cratered in the Solar System -- but what's inside? Jupiter's moon Callisto is a battered ball of dirty ice that is larger than the planet Mercury. It was visited by NASA's
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🌌 SpacePicture of a Day: NGC 7027: The Pillow Planetary Nebula 🪐
What created this unusual planetary nebula? Dubbed the Pillow Nebula and the Flying Carpet Nebula, NGC 7027 is one of the smallest, brightest, and most unusually shaped planetary nebulas known. Given its
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🌌 SpacePicture of a Day: A Two Percent Moon 🪐
A young crescent moon can be hard to see. That's because when the Moon shows it's crescent phase (young or old) it can never be far from the Sun in planet Earth's sky. And even though the sky is still
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🌌 SpacePicture of a Day: A Dark Veil in Ophiuchus 🪐
The diffuse hydrogen-alpha glow of emission region Sh2-27 fills this cosmic scene. The field of view spans nearly 3 degrees across the nebula-rich constellation Ophiuchus toward the central Milky Way.
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🌌 SpacePicture of a Day: Galaxies, Stars, and Dust 🪐
This well-composed telescopic field of view covers over a Full Moon on the sky toward the high-flying constellation Pegasus. Of course the brighter stars show diffraction spikes, the commonly seen effect
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🌌 SpacePicture of a Day: The Meteor and the Star Cluster 🪐
Sometimes even the sky surprises you. To see more stars and faint nebulosity in the Pleiades star cluster (M45), long exposures are made. Many times, less interesting items appear on the exposures that
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🌌 SpacePicture of a Day: The Spinning Pulsar of the Crab Nebula 🪐
At the core of the Crab Nebula lies a city-sized, magnetized neutron star spinning 30 times a second. Known as the Crab Pulsar, it is the bright spot in the center of the gaseous swirl at the nebula's
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🌌 SpacePicture of a Day: Fishing for the Moon 🪐
How big is planet Earth's Moon? Compared to other moons of the Solar System, it's number 5 on the largest to smallest ranked list, following Jupiter's moon Ganymede, Saturn's moon Titan, and Jovian moons
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🌌 SpacePicture of a Day: Mostly Perseids 🪐
In this predawn skyscape recorded during the early morning hours of August 13, mostly Perseid meteors are raining down on planet Earth. You can easily identify the Perseid meteor streaks. They're the ones
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🌌 SpacePicture of a Day: Perseid Meteors from Durdle Door 🪐
What are those curved arcs in the sky? Meteors -- specifically, meteors from this year's Perseid meteor shower. Over the past few weeks, after the sky darkened, many images of Perseid meteors were captured
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🌌 SpacePicture of a Day: Giant Galaxies in Pavo 🪐
Over 500,000 light years across, NGC 6872 (bottom left) is a truly enormous barred spiral galaxy. At least 5 times the size of our own large Milky Way, NGC 6872 is the largest known spiral galaxy. About
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🌌 SpacePicture of a Day: NGC 1309: A Useful Spiral Galaxy 🪐
This galaxy is not only pretty -- it's useful. A gorgeous spiral some 100 million light-years distant, NGC 1309 lies on the banks of the constellation of the River (Eridanus). NGC 1309 spans about 30,000
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🌌 SpacePicture of a Day: Asperitas Clouds Over New Zealand 🪐
What kind of clouds are these? Although their cause is presently unknown, such unusual atmospheric structures, as menacing as they might seem, do not appear to be harbingers of meteorological doom. Formally
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🌌 SpacePicture of a Day: Moonlight, Planets, and Perseids 🪐
In the predawn sky on August 13, two planets were close. And despite the glare of a waning gibbous Moon, bright Jupiter and even brighter Venus were hard to miss. Their brilliant close conjunction is posing
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🌌 SpacePicture of a Day: M13: The Great Globular Cluster in Hercules 🪐
In 1716, English astronomer Edmond Halley noted, "This is but a little Patch, but it shews itself to the naked Eye, when the Sky is serene and the Moon absent." Of course, M13 is now less modestly
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🌌 SpacePicture of a Day: Trapezium: In the Heart of Orion 🪐
What lies in the heart of Orion? Trapezium: four bright stars, that can be found near the center of this sharp cosmic portrait. Gathered within a region about 1.5 light-years in radius, these stars dominate
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🌌 SpacePicture of a Day: Perseids from Perseus 🪐
Where are all of these meteors coming from? In terms of direction on the sky, the pointed answer is the constellation of Perseus. That is why the meteor shower that peaks tonight is known as the Perseids
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🌌 SpacePicture of a Day: Zodiacal Road 🪐
What's that strange light down the road? Dust orbiting the Sun. At certain times of the year, a band of sun-reflecting dust from the inner Solar System appears prominently just after sunset -- or just
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