Astronomy

Astronomers Detect the Faint Glow of Stars in Between Galaxies

Not all stars are members of galaxies. Some stars exist in the space between galaxies, though they didn’t form there. They’re called intra-group stars, and astronomers study them by observing their light, called intra-group light (IGL.) They’re challenging to observe because their light is extremely faint and overpowered by the light of nearby galaxies. Astronomers …

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Astronomers Directly Image a Jupiter-Sized Planet Orbiting a Sunlike Star

According to the most widely-accepted theory, planetary systems form from large clouds of dust and gas that form disks around young stars. Over time, these disks accrete to create planets of varying size, composition, and distance from their parent star. In the past few decades, observations in the mid- and far-infrared wavelengths have led to …

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The Technique for Detecting Meteors Could be Used to Find Dark Matter Particles Entering the Atmosphere

Researchers from Ohio State University have come up with a novel method to detect dark matter, based on existing meteor-detecting technology. By using ground-based radar to search for ionization trails, similar to those produced by meteors as they streak through the air, they hope to use the Earth’s atmosphere as a super-sized particle detector. The …

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The Second-Closest Supermassive Black Hole Might be in a Nearby Dwarf Galaxy

There’s a little galaxy in the Milky Way’s cosmic neighborhood called Leo 1. It’s a dwarf spheroidal that lies less than a million light-years away from us. Surprisingly, it has a supermassive black hole about the same mass as Sagittarius A* in our galaxy. That’s unusual in several ways, and astronomers want to know more …

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OK, Artemis. Now You’re Just Showing Off. A Stunning View of the Moon Eclipsing Earth From the Orion Spacecraft

Have you ever seen a lunar eclipse of the Earth from the far side of the Moon? Now we have. On Monday (November 28, 2022) NASA’s Orion spacecraft streamed back live video showing the Earth and Moon right next to each other, followed by a stunning view of the Moon eclipsing the Earth. What a …

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Asteroid Explodes Over Canada, Artemis I Updates, Very Large Telescope Improvements

Updates on Artemis I. NASA predicted an asteroid striking Canada. James Webb’s view of Titan. New adaptive optics for the Very Large Telescope. Artemis I Updates NASA’s Artemis I mission continues. On Nov. 21st, the Orion Capsule made its first close flyby of the Moon, coming within 130 km of the lunar surface. The capsule …

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The First SLS Launch Caused Damage to the Launch Pad. How bad was it?

When you test launch the most powerful rocket ever successfully flown, there’s bound to be some collateral damage. With 8.8 million pounds of thrust at liftoff, NASA’s Space Launch System (SLS) packs a mighty punch (the Saturn V, which carried astronauts to the moon in 1969, produced 7.5 million pounds). After November 16’s test flight …

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NASA blames recent Hubble woes on aging hardware

The Hubble Space Telescope, seen from the space shuttle Columbia at the end of a 2002 servicing mission. The observatory’s door is open in this picture. Credit: NASA Hardware problems that cropped up earlier this month on the Hubble Space Telescope, now approaching the 31st anniversary of its launch, are the latest signs the observatory …

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Hubble resumes science observations after software error

The Hubble Space Telescope in the payload bay of space shuttle Atlantis during the last servicing mission in May 2009. Credit: NASA NASA has partially restored the Hubble Space Telescope to science mode after a software error temporarily halted observations, but engineers continue studying a problem that kept the telescope’s aperture door from closing and …

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