Space telescope – Page 3

No killer asteroid expected in the next 1,000 years, but small ones may pose a risk: Study

16May

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No killer asteroid expected in the next 1,000 years, but small ones may pose a risk: Study

[ad_1] If you have been tracking the comings and goings of asteroids and comets regularly, then here is some news that may be of particular interest. The chances of an asteroid larger than a kilometre colliding with Earth within the next 1,000 years are low. However, there remains a potential risk from smaller asteroids, according to a recent study.Researchers from the University of Colorado, Boulder, and NASA have conducted a study of nearly 1,000 near-Earth objects (NEOs) larger than one kilometre. Unlike previous analyses that focused on a century's worth of data, this study looked ahead an entire millennium. Planet-killer asteroidsDr. Davide Farnocchia of NASA's Center for Near Earth Object Studies explained that the likelihood of asteroid impacts causing significant damage to Earth...

8May

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NASA Astronomy Picture of the Day 8 May 2023: Mesmerizing Spanish Dancer Galaxy

[ad_1] NASA, with the help of its various advanced telescopes such as Spitzer Space Telescope, the Hubble Space Telescope, and the newly launched James Webb Space Telescope, has published fascinating images of galaxies thousands and even millions of light-years away. Some of these include Centaurus A Galaxy, Hamburger Galaxy, Rubin's Galaxy, Arp 78 and more. These galaxies exhibit an array of sizes, ranging from diminutive dwarf galaxies with a meager population of a few billion stars to colossal elliptical galaxies with trillions of stars. Moreover, some of these galaxies have unusual shapes like a hamburger, toothpicks, rings and more.Today's NASA Astronomy Picture of the Day is a snapshot of NGC 1566, also known as the Spanish Dancer Spiral Galaxy, located about 40 million light-year...

4May

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NASA Astronomy Picture of the Day 4 May 2023: Supermassive Black Hole in Messier 87 Galaxy

[ad_1] The Event Horizon Telescope, which included a collaboration of 8 telescopes around the world in 2017, captured the first ever image of a supermassive black hole at the center of a galaxy known as Messier 87. The supermassive black hole is engulfing huge amounts of gas, and that material forms what scientists call an accretion disk. The gas in the disk can heat up to millions of degrees Fahrenheit due to the gas being so dense.Today's NASA Astronomy Picture of the Day is a snapshot of the supermassive black hole at the center of Messier 87. Messier 87 is a supergiant elliptical galaxy located about 55 million light-years away towards the constellation of Virgo. Alongside the black hole, relativistic jet blasting from the galaxy's central region can be observed. This is due to ioni...

James Webb Telescope gives a peek into ‘baby years’ of 7 Galaxy clusters

25Apr

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James Webb Telescope gives a peek into ‘baby years’ of 7 Galaxy clusters

[ad_1] Since its launch, the James Webb Space Telescope has been astonishing the world with its capabilities despite being in service for less than two years. NASA's $10 billion space telescope has been capturing breathtaking images of far-off galaxies, star clusters, ancient black holes and other celestial objects. Now, it has added another feather to its cap by giving us a glimpse into the past of galaxies, when they wer babies, and how they formed, assembled and may look now.A recent study has shed light onto the early formative, 'baby years', of galaxies. According to NASA, protocluster of seven galaxies has been confirmed at a distance that astronomers refer to as redshift 7.9, or a mere 650 million years after the Big Bang. Early formation of galaxy clustersAfter analyzing the col...

13Apr

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NASA Astronomy Picture of the Day 13 April 2023: Globular Star Cluster NGC 2419

[ad_1] Globular clusters are stable, tightly bound groups of tens of thousands to millions of stars that are associated with all types of galaxies. According to NASA, it is possible that globular star clusters once ruled the Milky Way. Back in the old days, back when our Galaxy first formed, perhaps thousands of globular clusters roamed our Galaxy. Today, there are less than 200 left.Today's NASA Astronomy Picture of the Day is the globular star cluster NGC 2419. It is a multi-generational star cluster located about 300,000 light-years away towards the constellation of Lynx. According to NASA, the stars populating globular clusters are very similar because they formed at roughly the same time and because of this, they tend to display similar properties. Tech which helped capture the ima...

10Apr

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NASA Astronomy Picture of the Day 10 April 2023: Running Chicken Nebula

[ad_1] Today's NASA Astronomy Picture of the Day is IC 2944, also known as the Running Chicken Nebula. According to NASA, it is located about 6,000 light years away towards the constellation of the Centaur and spans almost 100 light-years across. The nebula's strange nickname, Running Chicken, comes from the chicken-like shape of its brightest region, which resembles a running bird.The picture was captured by astrophotographer Daniel Stern, NuSTAR Project Scientist at NASA's Jet Propulsion Laboratory (JPL). What is a Nebula?A Nebula is a star forming region located in Interstellar space, which is the space between stars. It consists of gases, mainly hydrogen and helium. According to NASA, a Nebula can contain as few as ten stars or as many as millions of stars. Although most nebulae bel...

Historic! OLDEST Galaxy found by James Webb Space Telescope

7Apr

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Historic! OLDEST Galaxy found by James Webb Space Telescope

[ad_1] Since the launch of NASA's James Webb Telescope, it has never failed to surprise with its unparalleled discoveries. From exoplanets, and distant galaxies, to breathtaking views of Nebula. James Webb Space Telescope has made very impressive discoveries. Now, the James Webb Telescope has made another historic discovery by detecting the oldest known galaxy. According to recent studies published in the Nature Astronomy journal, astronomers have "unambiguously detected" four of the most remote galaxies ever observed.These galaxies date back to a time when the universe was only 2 percent of its current age, approximately 300 to 500 million years after the Big Bang, which occurred 13 billion years ago. Among the four remote galaxies detected, the oldest and most distant one is named JAD...

Shocking Gamma-Ray Burst shatters record; is brightest in 10000 years; beats Sun, says NASA

29Mar

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Shocking Gamma-Ray Burst shatters record; is brightest in 10000 years; beats Sun, says NASA

[ad_1] In October last year, astronomers detected the 'most-powerful ever' gamma-ray burst shockingly close to Earth. According to NASA, a gamma-ray burst (GRB) is a short-lived burst of gamma-ray light, which is the most energetic form of light. Although these bursts are short-lived, they shine a million trillion times as bright as the Sun. The gamma-ray burst observed on October 9 was so powerful that scientists initially thought it came from a source not too distant from Earth, and it lit up gamma-ray detectors on telescopes around the world.Instead, it was a terrifyingly powerful explosion of gamma-rays from a source further away than they had previously assumed and was renamed GRB221009A. Now, researchers have finally combed through all the data and have revealed that it was the br...

For first time, James Webb Space Telescope measures temperature of rocky exoplanet

28Mar

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For first time, James Webb Space Telescope measures temperature of rocky exoplanet

[ad_1] The James Webb Space Telescope has measured the temperature of a rocky exoplanet for the first time, finding that a "cousin" of Earth most likely lacks an atmosphere, researchers said Monday.When the Trappist-1 system was discovered in 2017, astronomers were excited at the prospect that some of its seven rocky planets -- which are roughly similar to Earth in size and mass -- could be habitable. Just 40 light years from Earth, the planets orbit much closer to their ultracool red dwarf star than the rocky planets in our Solar System. But their star gives off far less energy than our Sun. The system made an obvious target for the piercing gaze of the Webb telescope, which has unleashed a torrent of scientific discovery since releasing its first observations in July last year.Astrono...

Space telescope uncovers massive galaxies near cosmic dawn

24Feb

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Space telescope uncovers massive galaxies near cosmic dawn

[ad_1] Astronomers have discovered what appear to be massive galaxies dating back to within 600 million years of the Big Bang, suggesting the early universe may have had a stellar fast-track that produced these “monsters.” While the new James Webb Space Telescope has spotted even older galaxies, dating to within a mere 300 million years of the beginning of the universe, it's the size and maturity of these six apparent mega-galaxies that stun scientists. They reported their findings Wednesday. Lead researcher Ivo Labbe of Australia's Swinburne University of Technology and his team expected to find little baby galaxies this close to the dawn of the universe — not these whoppers. “While most galaxies in this era are still small and only gradually gr...