massive stars

A general illustration of a star being torn apart by the tidal forces of a black hole. Some of the material forms a hot accretion disk, from which a high-speed wind is emitted. The researchers speculate that a similar mechanism, within a binary system, may explain the AT2024wpp event. Image: NASA's Goddard Space Flight Center/CI Lab.

A black hole probably ripped apart a massive star, creating an unprecedented cosmic flash

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The AT2024wpp event, known as the “whip,” reached a brightness of hundreds of billions of suns and evolved at an extraordinary speed. Researchers estimate that a black hole in a binary system ripped apart the companion star, creating a hot accretion disk and rapidly launching a wind.
The yellow star WOH G64 that may become a supernova. Credit: ESO / L. Calçada, CC BY

One of the biggest known stars may be approaching the final stage of its life – a supernova

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A new study published in Nature Astronomy provides evidence that WOH G64, one of the largest known stars in the Large Magellanic Cloud, has transitioned from a red giant to a rare yellow supergiant — a transition
This artist's impression shows the massive star Gamma Cassiopeiae and its companion, a small but dense white dwarf. Credit: ESA / Y. Nazé

Cassiopeia gamma mystery solved: Hidden white dwarf is the source of the unusual X-ray radiation

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New observations by the Japanese XRISM Space Telescope (XRISM) have shown that the intense, hot gamma-ray emission in Cassiopeia does not originate from the star itself, but from an absorbing white dwarf hidden in the system—thus
Supernova. Illustration: depositphotos.com

Radio signals reveal star's final years before violent supernova

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Monitoring lasting about 18 months showed that the star emitted helium-rich gas in the last years of its life; the data hint at a binary system and a new “window” for studying stellar deaths via radio
The research team

New study reveals: Most massive stars in the early universe were born in pairs

Massive stars in the Small Magellanic Cloud. Of the stars examined, seventy percent (the red diamonds) appear to be accelerating and decelerating. This suggests the existence of a companion. Credit: ESO/Sana et al.

Researchers discovered: Massive stars in metal-poor galaxies are also born in pairs

An international team led by scientists from Belgium, the Netherlands and Tel Aviv University has found that over 70% of the massive stars in the Small Magellanic Cloud have partners – a finding that sheds new light on the first stars
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Astronomers Just Revealed the Secret Fuel Behind Giant Stars

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Ammonia gas falls into an adsorption disk and feeds HW2 in Capouse A. Credit: NSF/AUI/NSF NRAO/B. Saxton

Astronomers Document "Cosmic Feast": Massive Star Devours Gas at Record Speed

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New observations using the VLA radio array reveal how a protostar called HW2 Bacpheus A is absorbing ammonia gas from a rotating disk at a rare rate – providing a rare glimpse into the process of massive star formation.
This Hubble image of IC 758 shows a peaceful galaxy – but beneath its calm appearance lies the remains of SN 1999bg, the explosive death of a massive star. Credit: ESA/Hubble & NASA, C. Kilpatrick

Quiet Galaxy, Explosive Secret: The Supernova Surprise of the Serene Spiral

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A seemingly peaceful galaxy hides the dramatic consequences of the violent death of a massive star.
Artist's impression of a protoplanetary disk. Credit: ESA

The Webb Space Telescope finds an abundance of carbon molecules around a young star

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"It's amazing that we can detect and quantify the amount of molecules we know very well on Earth, like benzene, which is actually more than 600 light-years away," said one of the authors of the paper that appeared.
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