White dwarf

NASA's Hubble spies on atmosphere of white dwarf being polluted by enormous comet-like object for the first time!

NASA's Hubble spies on atmosphere of white dwarf being polluted by enormous comet-like object for the first time!

With a chemical composition similar to Halley's comet, the object is 100,000 times more gigantic and contains water, the amount of which is much higher.

Feb 09, 2017, 22:27 PM IST
Hubble sees colorful ‘last hurrah’ of a sun-like star! (See pic)

Hubble sees colorful ‘last hurrah’ of a sun-like star! (See pic)

The image shows the colorful "last hurrah" of NGC 2440, which lies about 4,000 light-years from Earth in the direction of the constellation Puppis.

Sep 24, 2016, 03:07 AM IST
White dwarf found lashing red dwarf in space

White dwarf found lashing red dwarf in space

Astronomers have discovered a new type of exotic binary star system, in which a rapidly spinning white dwarf star is lashing the companion red dwarf star with high-energy particles, causing the entire system to pulse dramatically every 1.97 minutes with radiation ranging from the ultraviolet to radio.

Jul 29, 2016, 00:48 AM IST

Exodus of white dwarf stars captured for first time ever

A team of astronomers using the NASA/ESA Hubble Space Telescope has, for the first time, collected a census of young white dwarf stars beginning their migration from the crowded center of an ancient star cluster to its less populated outskirts.

May 15, 2015, 19:04 PM IST
Astronomers find image of a white dwarf leaving behind 'Jupiter's Ghost'

Astronomers find image of a white dwarf leaving behind 'Jupiter's Ghost'

In a new observation, astronomers have identified an image of a white dwarf expelling out its outer layers.

Feb 03, 2015, 10:14 AM IST

NASA`s Hubble Space Telescope spots possible `Zombie Star`

A possible ``zombie star`` has been spotted by NASA`s Hubble Space Telescope that may have been left behind after an unusually weak supernova explosion, as revealed by scientists.

Aug 07, 2014, 16:39 PM IST

Earth-size diamond found in space

The faintest white dwarf star, possibly the coldest ever detected, has been identified by a team of astronomers.

Jun 25, 2014, 15:43 PM IST

Planets around cooling stars may not support life

No terrestrial, or Earth-like planets have yet been confirmed orbiting white or brown dwarfs, but a new research suggests such planets if exist will prove poor candidates for life.

Nov 21, 2012, 16:56 PM IST

Bright supernovae likely caused by interaction between white dwarves

Astronomers have pinned down the likely origins of especially bright supernovae that they use as easy-to-spot “mile markers” to measure the expansion and acceleration of the universe.

Nov 20, 2012, 19:54 PM IST

12 billion year old white dwarf stars identified

In a new study, astronomers have identified two white dwarf stars considered to be the oldest and closest known to man.

Apr 12, 2012, 20:49 PM IST

‘White dwarf’ triggers giant supernovae explosion

Some of the brightest known explosions in the universe, type 1a supernovae, are triggered by ancient, dense stars called white dwarfs.

Dec 16, 2011, 12:37 PM IST