Betelgeuse has been a beacon in the night sky for stellar observers, but it began to dim late last year. At the time of writing, Betelgeuse is at about 36 percent of its normal brightness, a change noticeable even to the naked eye. (Image: ESO)

ESO Telescope Sees Surface of Dim Betelgeuse

Using ESO’s Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The stunning new images of the star’s surface show not only the fading red supergiant, but also…

For the first time, researchers from Bonn University and Strasbourg University have simulated the formation of galaxies in a universe that works without dark matter.   (Image: via   pixabay  /  CC0 1.0)

Galaxy Formation Simulated Without Dark Matter

For the first time, researchers from Bonn University and Strasbourg University have simulated the formation of galaxies in a universe that works without dark matter. Instead, they modified Newton’s laws of gravity to simulate this process on the computer. The galaxies that…

Activity on the Sun, known as space weather, can affect systems on Earth. Magnetic eruptions on the Sun can impact air travel, disrupt satellite communications, and bring down power grids, causing long-lasting blackouts and disabling technologies such as GPS. (Image: via   pixabay  /  CC0 1.0)

NSF’s Newest Solar Telescope Produces First Images

Just released first images from the National Science Foundation’s Daniel K. Inouye Solar Telescope reveal unprecedented detail of the Sun’s surface and preview the world-class products to come from this preeminent 4-meter solar telescope. NSF’s Inouye Solar Telescope, on the…

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ESO Telescope Sees Surface of Dim Betelgeuse

Using ESO’s Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The stunning new images of the star’s…

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Black Holes Eat Stars in Variable Mood Lighting

When a black hole chews up a star, it produces visible light or X-rays, but astronomers have almost never detected both types of radiation. Astronomer Peter Jonker (SRON/Radboud University) and…

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Galaxy Formation Simulated Without Dark Matter

For the first time, researchers from Bonn University and Strasbourg University have simulated the formation of galaxies in a universe that works without dark matter. Instead, they modified Newton’s laws of…

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NSF’s Newest Solar Telescope Produces First Images

Just released first images from the National Science Foundation’s Daniel K. Inouye Solar Telescope reveal unprecedented detail of the Sun’s surface and preview the world-class products to come from this…

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Astronomers Witness the Dragging of Space-Time

After almost 20 years of patient monitoring, an international team of astronomers has witnessed the very fabric of space-time being dragged around a rapidly-rotating exotic star known as a white…

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XMM-Newton Discovers Scorching Gas in Milky Way’s Halo

ESA’s XMM-Newton has discovered that gas lurking within the Milky Way’s halo reaches far hotter temperatures than previously thought and has a different chemical make-up than predicted, challenging our understanding…

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TESS Dates an Ancient Collision With Our Galaxy

An international team of scientists led by the University of Birmingham adopted the novel approach of applying the forensic characterization of a single ancient, bright star called ν Indi as a probe…