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My encounter with a different and deeply mysterious kind of corona

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My encounter with a different and deeply mysterious kind of corona

While teaching solar physics this year, I was once again drawn in by the mystery of why the sun's corona is so inexplicably hot, says Chanda Prescod-Weinstein

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Cow in space

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Baffling 'space cow' explosion was probably a failed supernova

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On August 31, 2012 a long filament of solar material that had been hovering in the sun's atmosphere, the corona, erupted out into space at 4:36 p.m. EDT. The coronal mass ejection, or CME, traveled at over 900 miles per second. The CME did not travel directly toward Earth, but did connect with Earth's magnetic environment, or magnetosphere, causing aurora to appear on the night of Monday, September 3. Picuted here is a lighten blended version of the 304 and 171 angstrom wavelengths. Cropped Credit: NASA/GSFC/SDO NASA image use policy. NASA Goddard Space Flight Center enables NASA???s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA???s accomplishments by contributing compelling scientific knowledge to advance the Agency???s mission. Follow us on Twitter Like us on Facebook Find us on Instagram

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Monster cloud of plasma spotted spewing out of a distant star

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James Webb Space Telescope Mirrors Undergoing Cryogenic Testing The flight mirrors for the James Webb Space Telescope undergo cryogenic testing at NASA Marshall. Credit: Ball Aerospace

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The James Webb Space Telescope is expensive, but it should be worth it

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3 of the most exciting space telescopes planned for launch by 2034

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3 of the most exciting space telescopes planned for launch by 2034

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How the James Webb telescope will rewrite the story of the universe

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How the James Webb telescope will rewrite the story of the universe

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Muḥammad ibn Mūsā al-Khwārizmī

People in Science

Muḥammad ibn Mūsā al-Khwārizmī

Dwarf planet Ceres is shown in these false-color renderings, which highlight differences in surface materials.

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Now is the perfect time to see dwarf planet Ceres for yourself

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Earth-like exoplanet

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US astronomers plan $11 billion telescope to picture another Earth

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This is the Belt of Orion with its three blue stars across the top of the frame (L to R: Alnitak, Alnilam, and Mintaka), with the iconic Horsehead Nebula (aka B33) below Alnitak, with the dark Horsehead set against the bright nebula IC 434, aka Orion???s Dagger. The pinkish nebula above Alnitak is NGC 2024, the Flame Nebula. The small blue reflection nebula left of the Horsehead is NGC 2023, with smaller IC 435 to the left of it. The field is filled with the large open cluster Collinder 70. The multiple star at bottom left of centre is Sigma Orionis. Many other smaller bits of reflection nebulas populate the field in and around the Belt. This is a blend of 8 x 5-minute exposures at ISO 800 unfiltered with 6 x 10-minute exposures at ISO 1600 shot through an Optolong L-Enhance dual-band nebula enhancement filter (it lets through only Oxygen III blue-green and Hydrogen-alpha red to really enhance the nebulosity). The filtered shot is blended in with the unfiltered shot to retain the best of both worlds: the rich reds captured by the filtered images without losing the range of colours in the other nebulas such as the salmon pinks of the Flame and the blue reflection nebulas and stars. All exposures with the Canon EOS Ra mirrorless camera through the SharpStar HNT150 Hyperbolic Newtonian Astrograph at f/2.8, from home on a very clear moonless night January 27, 2020. All stacked, aligned and blended in Photoshop 2020. (Photo by: Alan Dyer/VW PICS/Universal Images Group via Getty Images)

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How to use Orion to find Canis Major and Canis Minor

The dog constellations, Canis Major and Canis Minor, seem to run along faithfully behind Orion. Here's how to find them by star-hopping from Orion's belt, writes Abigail Beall

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Space

Satellites and junk are littering space and ruining our night skies

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Space

Promising radio signal isn’t aliens, just human-generated interference

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Astronomers left puzzled by the dimmest supernova ever seen

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Arid meteor shower makes new appearance in southern hemisphere skies

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