Astronomers using W. M. Keck Observatory on Maunakea in Hawaiʻi have discovered that aurorae at visible wavelengths appear on all 4 major moons of Jupiter: Io, Europa, Ganymede, and Callisto.
Astronomy
Feb 16, 2023
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264
When neutron stars collide they produce an explosion that is, contrary to what was believed until recently, shaped like a perfect sphere. Although how this is possible is still a mystery, the discovery may provide a new key ...
Astronomy
Feb 15, 2023
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Right in the middle of this image, nestled among a smattering of distant stars and even more distant galaxies, lies the newly discovered dwarf galaxy known as Donatiello II. If you cannot quite distinguish the clump of faint ...
Astronomy
Feb 10, 2023
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60
Over the course of billions of years, galaxies grow and evolve by forging new stars and merging with other galaxies through aptly named "galactic immigration" events. Astronomers try to uncover the histories of these immigration ...
Astronomy
Feb 8, 2023
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259
Galaxies fill a lot of roles in the universe. The most obvious one is star formation factories. Without that activity, the cosmos would be a very different place. The European Southern Observatory and the Atacama Large Millimeter ...
Astronomy
Feb 7, 2023
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A team of astronomers using two Maunakea Observatories in Hawaiʻi—W. M. Keck Observatory and Subaru Telescope—have photographed a brown dwarf orbiting HIP 21152, a young sun-like star in the Hyades Cluster.
Astronomy
Jan 24, 2023
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138
The discovery of diverse ices in the darkest regions of a cold molecular cloud measured to date has been announced by an international team of astronomers using NASA's James Webb Space Telescope. This result allows astronomers ...
Astronomy
Jan 23, 2023
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209
Magnetic reconnection is a universal process that changes magnetic topology and converts magnetic energy to plasma kinetic energy. Spatially resolved spectroscopic observations covering extended regions in the solar atmosphere ...
Astronomy
Jan 18, 2023
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41
All kinds of exoplanets orbit very close to their star. Some look like the Earth, others like Jupiter. Very few, however, are similar to Neptune. Why this anomaly in the distribution of exoplanets? Researchers from the University ...
Planetary Sciences
Jan 18, 2023
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33
Sunspots are the most noticeable manifestation of solar magnetic field concentrations in the photosphere. A typical mature sunspot has an umbra and a penumbra. Light bridges (LBs) are the strip-like bright features, two ends ...
Astronomy
Jan 18, 2023
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