nasa star – pressnews

6Jun

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NASA Astronomy Picture of the Day 6 June 2023: Planet destroyed by a star

[ad_1] Stars are fueled by the nuclear fusion of hydrogen to form helium deep in their interiors. While most stars live for billions of years, it is known that the bigger the star, the shorter its lifespan. When a star runs out of fuel, its core collapses, crushing together every proton and electron into a neutron. This resulted in the creation of the densest object known to man, a Neutron star – an object with the mass of a sun squished down to the size of a city, as per NASA. While this is how a star dies, these objects are rarely known to be the cause behind the end of the world, but that changed with the 2020 event.Today's NASA Astronomy Picture of the Day is an animated illustration of the Sun-like star ZTF SLRN-2020 engulfing one of its own planets. While planets are known to meet...

11May

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NASA Astronomy Picture of the Day 11 May 2023: Fomalhaut’s debris disk shot by Webb Telescope

[ad_1] The James Webb Space Telescope has been marveling us with its capabilities since its launch. NASA's $10 billion space telescope has captured images of stunning galaxies, black holes, and other celestial objects which are millions of light-years away. Recently, the space telescope added another feather to its cap by discovering three concentric debris rings orbiting Fomalhaut, one of the brightest stars in the night sky and the brightest one in the southern Piscis Austrinus constellation.Today's NASA Astronomy Picture of the Day is a snapshot of the dusty debris disk which surrounds Fomalhaut, which is located just 25 light-years away. Just days ago, three concentric debris rings were discovered around the hot star. The debris belts stretch across a gargantuan amount of space, nea...

Scientists witness planet being swallowed by sun-like star, says same will happen to Earth

5May

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Scientists witness planet being swallowed by sun-like star, says same will happen to Earth

[ad_1] Scientists have observed a Sun-like star swallowing a planet for the first time, confirming a prediction that Earth will face the same fate in 5 billion years.Scientists at MIT in collaboration with Harvard University and Caltech have observed some hints of stars just before, and shortly after, the act of consuming entire planets, but they have never caught one in the act until now. Published in the journal, 'Nature', the planetary extinction appears to have occurred in our own galaxy, around 12,000 light-years away, near the eagle-like constellation Aquila. Astronomers discovered an outburst from a star that grew more than 100 times brighter in just 10 days before rapidly fading away. This white-hot flash was strangely followed by a colder, longer-lasting signal. The scientists ...

NASA Webb telescope captures star on cusp of death

16Mar

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NASA Webb telescope captures star on cusp of death

[ad_1] The Webb Space Telescope has captured the rare and fleeting phase of a star on the cusp of death.NASA released the picture Tuesday at the South by Southwest conference in Austin, Texas. The observation was among the first made by Webb following its launch in late 2021. Its infrared eyes observed all the gas and dust flung into space by a huge, hot star 15,000 light-years away. A light-year is about 5.8 trillion miles. Shimmering in purple like a cherry blossom, the cast-off material once comprised the star's outer layer. The Hubble Space Telescope snapped a shot of the same transitioning star a few decades ago, but it appeared more like a fireball without the delicate details.Such a transformation occurs only with some stars and normally is the last step before they explode, goi...

Binary star system with potential to cause Kilonova explosion discovered, reveals study

3Feb

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Binary star system with potential to cause Kilonova explosion discovered, reveals study

[ad_1] In an astonishing development, astronomers have identified an extremely rare binary star system which has all the right conditions to trigger a Kilonova explosion one day. Stars are celestial objects millions of years old floating in space. The age, distribution, and composition of the stars in a galaxy trace the history, dynamics, and evolution of that galaxy. When stars die, most of them do so in a spectacular fashion as the explosion which proceeds it is a sight to see. However, some of them can also go out without causing any fireworks.Astronomers have recently identified the remnant of one such neutron star called SGR 0755-2933 which went out without causing any substantial explosions. According to the research, the star is located about 11,400 light-years from Earth in the...

NASA discovers first gamma-ray eclipses from Spider star systems

27Jan

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NASA discovers first gamma-ray eclipses from Spider star systems

[ad_1] Data from NASA’s Fermi Gamma-ray Space Telescope has been used to discover the first gamma-ray eclipses from a special type of binary star system. Check details here. Every one is aware of the Solar and Lunar eclipses, but there is something called gamma-ray eclipses too. Data from NASA's Fermi Gamma-ray Space Telescope has been used by scientists to discover the first gamma-ray eclipses from a special type of binary star system. These so-called spider systems contain a pulsar – the superdense, rapidly rotating remains of a star that exploded in a supernova – that slowly erodes its companion, NASA informed."An international team of scientists scoured over a decade of Fermi observations to find seven spiders that undergo these eclipses, which occur when the low-mass companion st...

Hubble Telescope records dying moments of a star being eaten by Supermassive black hole

23Jan

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Hubble Telescope records dying moments of a star being eaten by Supermassive black hole

[ad_1] The final moments of a star before being destroyed by a black hole have been recorded by the Hubble Space Telescope. A black hole is a place in space where the pull of gravity is so strong that nothing, including light, can escape. It is an extremely dense region of space formed by collapse of a giant star at the end of its life cycle. A supermassive Black Hole forms due to merging of black holes. The biggest black hole is a Supermassive black hole which resides in the center of galaxies and is capable of engulfing everything in its way. These black holes have masses that are more than 1 million suns together. Now, scientists have discovered a star actually being eaten by a supermassive black hole. Scientists, using the Hubble Space Telescope have recorded the final moments ...

NASA missions probe game-changing cosmic explosion

8Dec

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NASA missions probe game-changing cosmic explosion

[ad_1] On Dec. 11, 2021, NASA's Neil Gehrels Swift Observatory and Fermi Gamma-ray Space Telescope detected a blast of high-energy light. On Dec. 11, 2021, NASA's Neil Gehrels Swift Observatory and Fermi Gamma-ray Space Telescope detected a blast of high-energy light from the outskirts of a galaxy around 1 billion light-years away. The event has rattled scientists' understanding of gamma-ray bursts (GRBs), the most powerful events in the universe. For the last few decades, astronomers have generally divided GRBs into two categories. Long bursts emit gamma rays for two seconds or more and originate from the formation of dense objects like black holes in the centers of massive collapsing stars. Short bursts emit gamma rays for less than two seconds and are caused by mergers of dense ...

Death of a star! Awesome tech helps NASA wind back the clock from 160,000 light years away

17Sep

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Death of a star! Awesome tech helps NASA wind back the clock from 160,000 light years away

[ad_1] Astronomers have narrowed the timeline of a distant star's explosive demise with the help of NASA's Hubble Space Telescope and Chandra X-ray Observatory. Have you heard of stars exploding? Yes, the stars in the Milky Way and nearby galaxies do explode and astronomers have even seen the debris from scores of exploded stars. However, it is very difficult to determine or find out the timeline of the star's demise. But now NASA has informed that by studying the spectacular remains of a supernova in a neighboring galaxy using NASA telescopes, a team of astronomers has found enough clues to help wind back the clock. "By combining data from @ChandraXray, @NASAHubble, and the retired Spitzer Space Telescope astronomers have n...