Comprehensive coverage

Stars (main series)

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

  • 3 תגובות
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

  • No comments
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

  • 3 תגובות
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

  • 4 תגובות
Spotted by NASA's Chandra X-ray Observatory, this stellar pilot is one of the fastest objects of its kind ever observed. This surprising result gives astronomers information about how some of the largest stars end their lives.
Image illustration of star orbits in a three-body star system. Prof. Hagi Peretz, Technion.

A solution to the chaotic three-body problem

  • One response
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

  • No comments
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

  • No comments
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

  • 2 תגובות
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?

  • 4 תגובות
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

  • 3 תגובות
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

  • No comments
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

  • 14 תגובות
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

  • 4 תגובות
life in the universe Illustration: shutterstock

Earth will only be habitable for another 1.75 billion years

  • 24 תגובות
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

  • 2 תגובות
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

  • 6 תגובות
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

  • 8 תגובות
The HR8799 system as imaged by Hubble in 1997

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

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

How stars lose their partners

  • 3 תגובות
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

  • 7 תגובות
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

  • 8 תגובות
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

  • 4 תגובות
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

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

Hubble perceives restlessness in a compact and compact cluster

  • 15 תגובות
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 watched the sun "eating" the planet surrounding it

  • 14 תגובות
Science website logo
SEARCH