Stars (main series)

NGC 3603 is a high-rate star-forming region located 22,000 light-years from the Sun, and is the closest known region of its kind in the galaxy. Credit: ESO

Astronomers have discovered one of the most massive binary stars in the Milky Way.

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A pair of stars weighing 93 and 70 solar masses orbit each other every just 3.8 days – providing a rare glimpse into the processes that lead to the formation of binary black holes and gravitational waves
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
Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Astronomers Just Revealed the Secret Fuel Behind Giant Stars

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A fiery star and planet in space with a powerful solar flare in the background of twinkling stars.

Violent eruptions from Proxima Centauri could endanger life on nearby planets

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New research using the ALMA telescope reveals that frequent and extremely intense bursts of radiation from Proxima Centauri could destroy the atmospheres of nearby planets and make them uninhabitable.
This image from the ALMA telescope shows the star system HD101584 and the complex gas clouds surrounding the binary pair. The clouds are the result of two stars that shared a common outer layer in the last moments of their lives. Credit: ALMA (ESO/NAOJ/NRAO), Olofsson et al., : Robert Cumming.

Dead and Alive: Astronomers Reveal Star Pairs That Are Changing Our Universe

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Astronomers have discovered for the first time pairs of binary star systems, consisting of the remnant of a dead star (a white dwarf) and a living star (a main sequence star), within young clusters
Image: This artist's rendering of a planet-forming disk surrounding a young star shows a swirling "pancake" of hot gas and dust from which planets form. Using the James Webb Space Telescope, the team obtained detailed images showing the layered, conical structure of the disc's winds - streams of gas blowing out into space. Credit: National Astronomical Observatory of Japan (NAOJ)

Winds of Change: The James Webb Space Telescope Reveals Elusive Details in Young Star Systems

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Astronomers have discovered new details about gas flows that shape planet-forming disks and shape them over time, offering a glimpse into how our solar system likely formed
The nearby star V889 Hercules rotates fastest at about 40 degrees latitude. This unusual rotation profile challenges established stellar models. Credit: Jani Närhi, University of Helsinki

Strange star amazes astronomers: V889 Hercules breaks the laws of rotation of stars

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The sun rotates fastest at the equator and the rate of rotation slows down at higher latitudes, while in the polar regions it is the slowest. But a nearby Sun-like star, V889 Hercules in the Hercules group 115 light years away
The brightness of RS Puppis, one of the brightest Cepheid variable stars, changes at a constant rate on a six-week cycle. Credit: NASA, ESA, Hubble Heritage Team (STScI/AURA)-Hubble/Europe Collaboration

Pulsating Beacons: Revolutionary Measurements Redefine Cepheid Variable Stars

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**Title:** Pulsating Beacons: Revolutionary Measurements Redefine Cupid Stars **Subtitle:** New study reveals deep insights into the structure and evolution of cupid stars through precise radial measurements, offering new approaches to the study of the universe
A red giant star and a white dwarf orbit each other in a nova animation similar to that of T corona borealis. The red giant is a large ball in shades of red, orange and white, with the side facing the white dwarf being in lighter shades. The white dwarf is hidden in a bright white and yellow glow, representing an accretion disk around the star. A stream of material, shown as a diffuse cloud of red, flows from the red giant to the white dwarf. When the red giant passes behind the white dwarf, a nova explosion occurs on the white dwarf, creating a ball of ejected novae material shown in bright orange. After the fog dissipates, a small white dot remains, indicating that the white dwarf survived the eruption. Credit: NASA/Goddard Space Flight Center

Don't miss it: in the coming months, a nova eruption is expected to occur that will be visible to the naked eye

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The T Corona Borealis system includes a white dwarf—an Earth-sized remnant of a star with a mass similar to that of our Sun—and an ancient red giant whose hydrogen has been sucked up by a force
A simulation of a possible explanation for the speed of an L substar named CWISE J124909+362116.0 shows it as part of a binary star pair that ended in a supernova explosion of the white star. Credit: Adam Makarenko / WM Keck Observatory

An extremely fast star has been discovered speeding through the Milky Way at a speed of 2.1 million km/h

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The planet was discovered thanks to the efforts of 80 participants in a citizen science project called "Rear Worlds: Planet 9" and a team of astronomers from all over the United States
An artist's impression of the large-scale landscape of FU~Ori. The image shows the currents created by the interaction between strong stellar winds triggered by the outburst and the remnant mantle from which the star formed. The stellar wind drives the shock wave into the mantle and the CO gas carried away by the shock is the new discovery of the ALMA observatory. Credit: NSF/NRAO/SDagnello

Astronomers solve the mystery of the dramatic 1936 eruption of FU Orionis

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An unusual group of stars in the Orion constellation has revealed their secrets. FU Orionis, a double star system, first attracted the attention of astronomers in 1936, when the central star suddenly became
This figure shows how CSOs are probably formed. When one massive star gets too close to a black hole (left), it is devoured. This causes the black hole to emit a very fast dipole jet (center). The jet extends outward and its hot edges glow with radio wave emissions (right). Credit: B. Saxton/NRAO/AUI/NSF

Cosmic Mysteries Revealed: The Short and Brilliant Lives of Compressed Compact Objects

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The CSOs emit jets for 5,000 years or less and then die out. "The CSO jets are very energetic jets but they seem to end, the jets stop flowing from the source
V838 Monocerotis A red variable star in the Monocros group. Illustration: depositphotos.com

Cosmic dust factories: variable stars and the origin of life

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It was found that stars with variable light intensity influence the production of the interstellar dust and its enrichment in heavy elements from which life was created
An artist's illustration shows a white dwarf (right) orbiting a large sun-like star (left) in a very short orbit, forming a "cataclysmic" binary system. Credit: M. Weiss/Center for Astrophysics Harvard & Smithsonian

A decades-old prediction has been verified: astronomers have discovered a "cataclysmic" pair of stars

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Astronomers have discovered a pair of stars with an extremely short orbit. A star similar to our sun orbits a white dwarf every 51 minutes
The location of the pulsar in 2006 and 2016. Credit: X-ray: NASA/CXC/SAO/L. Xi et al.

A pulsar was discovered burning through the Milky Way at a speed of more than one and a half million kilometers per hour

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This stellar pilot, spotted by NASA's Chandra X-ray Observatory, is one of the fastest objects of its kind ever observed. This surprising result adds to astronomers' information about how some of the stars
Image illustration of star orbits in a three-body star system. Prof. Hagi Peretz, Technion.

A solution to the chaotic three-body problem

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After hundreds of years: scientists have found effective solutions to the famous three-body problem - and what does this have to do with "drunken walking"?
Bands of stars, from the Carnegie Institution video - credit Jonathan Gagné Jacqueline Faherty

Stars also like to fly in flocks

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https://theconversation.com/uk/technologyאטא קארינה – מערכת הכוכבים הכפולים שפולטת קרינה קוסמית לעבר כדור הארץ. NASA, ESA, and the Hubble SM4 ERO Team

The "solar winds" of the pair of stars Eta Carina are a strong source of cosmic radiation that harms the Earth

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From ground-based telescopes, the so-called "ant nebula" (Menzel 3, or Mz 3) resembles the head and thorax of a garden-variety ant. This dramatic NASA/ESA Hubble Space Telescope image, showing 10 times more detail, reveals the "ant's" body as a pair of fiery lobes protruding from a dying, Sun-like star. The Hubble images directly challenge old ideas about the last stages in the lives of stars. By observing Sun-like stars as they approach their deaths, the Hubble Heritage image of Mz 3 - along with pictures of other planetary nebulae - shows that our Sun's fate will probably be more interesting, complex, and striking than astronomers imagined just a few years ago.

The celestial ant that shoots laser bursts

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The intensity of the light reaching us from a distant planet raises questions and even wild speculations: is it surrounded by alien technology? A simulation of the "Dyson count", which some explain as a possible solution to the mystery. Source: Vedexent / Wikimedia.

Did aliens build giant structures around a distant sun?

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Comparison of sizes of different types of stars. From left to right: a red dwarf, with a mass of about 0.1 that of the Sun; "yellow dwarf", like our sun; A "blue dwarf" of about 8 solar masses; and the giant star R136a1, which has about 300 solar masses. Source: ESO/M. Kornmesser.

Brighter than the sun, hotter than the summer in Israel

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Artist's rendering of a red dwarf and a gas giant type planet surrounding it. Photo: DAVID A. AGUILAR (CFA/HARVARD-SMITHSONIAN)

Young red dwarfs may teach us how planets form

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An animation showing how the orbits of stars in the Milky Way may change. In the picture you see two pairs of stars (marked in blue and red). Each couple started their life on the same path and suddenly one of the stars in the couple changed its path. The star marked in red has completed its transition to its new orbit while the star marked in blue is still moving. Photo Credit: Illustration by Dana Berry/SkyWorks Digital, Inc.; SDSS collaboration

About a third of the stars in the Milky Way have moved

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Stars are running away. Graphics: Julie Turner, the top view of the galaxy is from NASA and the horizontal image is from the European Southern Observatory. Credit: Graphic design by Julie Turner, Vanderbilt University. The top view of the galaxy comes from the National Aeronautics and Space Administration and the side view comes from the European Southern Observatory.)

A surprising new type of ultra-fast stars escaping the galaxy

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life in the universe Illustration: shutterstock

Earth will only be habitable for another 1.75 billion years

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A collision between an aging star and a young star in a triple star system. Illustration: Professor Hagi Peretz

The wild lives of aging stars (and planets): leaving home, changing partners and participating in violent clashes

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Family Photo of the PH1 Planetary System: The planet you discovered is depicted in this artist's drawing as it passes in front of the larger of the two suns. In the distance, beyond the planet's orbit lies a second pair of stars gravitationally bound to the planetary system. Image: Haven Giguere/Yale.

Amateur astronomers have discovered a planet in a four-sun system

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Artist's rendering showing the close proximity of two stars, the two active M4 red dwarfs orbit each other in two and a half hours and continue to spin towards each other. Eventually they will merge into one star. Illustration: J. Pinfield

A double star system that was thought to be impossible has been discovered

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The HR8799 system as imaged by Hubble in 1997

The old photo album: Researchers find new planets in old photographs

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The open cluster NGC 265 as imaged by the Hubble Space Telescope

How stars lose their partners

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A diagram of the pulsar system and the planet PSR J1719-1438 which has an orbital period of 5.7 milliseconds at its center, and is surrounded by a planet compared to the Sun (in yellow). Image: Credit: Swinburne Astronomy Productions, Swinburne University of Technology

A star turned into a diamond

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A planet from another galaxy (right) and its star (left), the yellowish star HIP 13044 in the lower right and its planet HIP 13044 b. This solar system is a remnant of a dwarf galaxy that was engulfed by the Milky Way billions of years ago. Credit: ESO/L. Calçada

A planet without a galaxy

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Artist's impression of the accelerating star HE 0437-5439. The hot blue star was ejected from the Milky Way with enough speed to escape the galaxy's gravitational pull. It is now flying through the outer fringes of the Milky Way at a speed of 2.5 million km/h far above the disk of the galaxy, about 200 light years from the center. It is now destined to move in the bingalactic space. Image: NASA, European Space Agency et al. Bacon of the Space Telescope Science Institute.

Hubble photographed a star that the black hole kicked out of the Milky Way

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Comparison of the sizes of stars of different types - red dwarf, solar-type star, blue dwarf and the recently discovered star Comparison of the sizes of different types of stars - red dwarf, solar-type star, blue dwarf and the recently discovered star R136a1. Figure: European Southern Observatory ESO

The heaviest star has been discovered - 300 times that of the Sun

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The star cluster ngc 3603 as photographed by the Hubble Space Telescope, 2010

Hubble perceives restlessness in a compact and compact cluster

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Artist's impression of the planet WASP-12b being devoured by its parent star. Image: NASA, European Space Agency and J. Bacon of the Space Telescope Science Institute (STScI).

Hubble observed the sun "eating" the planet surrounding it

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Dr. Avishai Gal-Yam and research student Yair Harkavi. Weizmann Institute

White dwarfs, heavy elements

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The new pictures of Hubble - Part C The globular cluster Omega Centauri

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Is a dead star preparing for a supernova explosion threatening Earth? Astronomers say "maybe"

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A super-fast star ejected from the Large Magellanic Cloud

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The Corot satellite that searches for planets outside the solar system produced surprises in its first year of operation

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The star that hides behind a blanket of dust

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A new look at the bright star Altair

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The double sunset Luke Skywalker saw on Tatooine is no fantasy

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Hubble photographed a star about to explode

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

20 new stars were discovered in the vicinity of the Sun - up to a distance of 33 light years (10 persec)

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

An eruption on a huge scale in one of the neighboring stars

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Two more stars have been discovered that escape the Milky Way forever

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A sky map suitable for Israel on the night of October 8 and showing the northern horizon highlighting the constellations. A group of dragons is visible to the left of the middle of the picture, to the right of the group of the little bear (at the end of its tail is the North Star) to the left of a group of villains (which is part of the summer triangle), both groups are familiar and easy to identify. The image is from Stellarium, an open source astronomy software.

the three north stars

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A world with three sunsets

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