galaxy

The companion star (blue) of Betelgeuse (orange) was discovered using the Alupka instrument at the Gemini North Observatory. The discovery answers a millennia-old question about why Betelgeuse's brightness varies on a cycle of about six years. Credit: International Gemini Observatory/NOIRLab/NSF/AURA Image processing: M. Zamani (NSF NOIRLab)

After decades of searching: Betelgeuse's elusive companion star discovered

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Using the Gemini Telescope in Hawaii, astronomers have managed to locate a young star orbiting Betelgeuse, within its atmosphere – a discovery that explains the red supergiant's brightness fluctuations.
Illustration: An image showing the Orion Nebula in visible and infrared light. Astronomers have discovered that about 14 million years ago, the solar system sailed through the Orion Nebula, a dense region where stars are forming. This journey may have compressed the heliosphere and increased the amount of interstellar dust, which could have affected Earth's climate and left an imprint on the geological record. Credit: NASA, European Space Agency, and F. Summers, G. Bacon, Z. Levay, J. DePasquale, L. Hustak, L. Frattare, M. Robberto, M. Gennaro (STScI), R. Hurt (Caltech/IPAC), M. Kornmesser (ESA); Special thanks: A. Fujii, R. Gendler)

Scientists reveal that the sun's journey through the Orion Nebula could have changed Earth's climate

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About 14 million years ago, in the middle of the Miocene epoch, the solar system passed through the Orion Nebula. At the same time, the Earth cooled and the Antarctic ice sheet formed. Is there a connection between the two phenomena?
Image of the galaxy NGC 5084, with Chandra X-ray data overlaid on a visible-light image of the galaxy. Chandra data shown in purple. Credit: X-ray: NASA/CXC, AS Borlaff, P. Marcum et al. Full optical image: M. Pugh, B. Diaz; Image Processing: NASA/USRA/L. Proudfit

NASA found a supermassive black hole spinning in the wrong direction

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Astronomers have discovered a puzzling cosmic anomaly – a supermassive black hole in the galaxy NGC 5084 that appears completely tilted relative to its galactic structure.
A white dwarf orbits a rapidly spinning neutron star. The image was prepared using DALEE and is not a scientific image

716 revolutions per second: the fastest spinning neutron star in the Milky Way

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Using a telescope on the International Space Station, researchers have discovered a neutron star in the Milky Way that rotates at an incredible 716 times per second - among the fastest ever discovered
Galaxy display in the deep valley, including spectacular spiral and amorphous galaxies and diverse stars.

In the "Pablo" galaxy, high-speed ejection of gas by the black hole stopped the formation of new stars

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The cover of the book "The Milky Way - Autobiography of our galaxy.

 Berea Chapter from: "The Milky Way Autobiography of Our Galaxy" by Dr. Moya McTeer, Mater Publishing

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Chapter from: "The Milky Way Autobiography of Our Galaxy" by Dr. Moya Maktir, Mater Publishing. Translation: Adi Marcuse Hess, Editing: Helit Yanai
An illustration of gravity. Illustration: depositphotos.com

Could gravity exist without mass, thus reducing the need for the hypothetical dark matter

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Scientists say that circular systems of topological structural defects common throughout the universe may be the source of the "excess" gravity needed to hold a galaxy or cluster together.
The galaxy AM 1054-325 has been warped from a normal pancake-like spiral shape into an S shape by the gravitational pull of a neighboring galaxy, as seen in this Hubble Space Telescope image. As a result, new star clusters were formed along a tidal tail stretched over thousands of light years, resembling a string of pearls. Credit: NASA, ESA, STScI, Jayanne English (University of Manitoba)

Hubble discovers how collisions between galaxies create conditions for star formation

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The discovery of an S-shaped galaxy could revolutionize the understanding of the process of star formation
Credit: Breakthrough Listen / Danielle Futselaar

SETI searches for technology signatures: The hunt for extraterrestrial signals at the heart of the Milky Way begins

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Akshay Suresh, a graduate student at Cornell University, is leading an unusual scientific activity - a groundbreaking mission called BLIPSS to detect periodic signals emanating from the center of the Milky Way
The cover of the book The Fate of Humanity - The Keeper of the Key

"The Fate of Mankind: The Keeper of the Key" - a new science fiction book

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The book's cover illustrator is veteran comic book artist Roger Bonet, who has worked with Marvel and DC Comics on a variety of well-known titles such as "Iron Man," "The Avengers," "Spider-Man," "Nightwing" and "Batman" * Excerpt from the book
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