TEHRAN (Press Shia) – Astronomers have observed the largest flare ever recorded from Proxima Centauri, the Sun’s closest stellar neighbor and one of the best-studied low-mass stars. - Science news - They used the Australian Square Kilometer Array Pathfinder (ASKAP), the Atacama Large Millimeter/submillimeter Array (ALMA), the NASA/ESA Hubble Space Telescope, NASA’s Transiting Exoplanet...
TEHRAN (Press Shia) – Researchers report the discovery of a super-Earth orbiting the star GJ 740, a red dwarf star situated some 36 light years from Earth. - Science news - In recent years there has been an exhaustive study of red dwarf stars to find exoplanets in orbit around them. These stars have effective surface temperatures between 2400 and 3700 K (over 2000 degrees cooler than the...
TEHRAN (Press Shia Agency) – All supermassive black holes in the centers of galaxies appear to have periods when they swallow matter from their close surroundings. - Science news - But that is about as far as the similarities go. That's the conclusion reached by British and Dutch astronomers from their research with ultra-sensitive radio telescopes in a well-studied region of the universe....
TEHRAN (Press Shia) – Scientists have long theorized that supermassive black holes can wander through space—but catching them in the act has proven difficult. - Science news - Now, researchers at the Center for Astrophysics | Harvard & Smithsonian have identified the clearest case to date of a supermassive black hole in motion. Their results are published today (March 12, 2021) in The...
TEHRAN (Press Shia Agency) – Astronomers have detected what they believe to be one of the earliest instances of "galactic cannibalism" — when one galaxy consumes one of its smaller neighbors — in an ultrafaint dwarf galaxy called Tucana II. - Science news - The findings stem from the discovery of an ancient dark matter halo, located in a galaxy 163,000 light years from Earth.Tucana II is...
TEHRAN (Press Shia Agency) – About 212 light years from Earth, a gas giant light enough to be nicknamed a "super-puff" or "cotton candy" planet is circling extremely close to its host star. The exoplanet is so light, it's left astronomers questioning everything we previously knew about how gas giants form. - Science news - This super-puff exoplanet, known as WASP-107b, is about the same size...
TEHRAN (Press Shia) – Astronomers have, for the first time, witnessed the death of a distant galaxy, which they describe as a "truly extreme event." - Science news - When all of the stars in a galaxy die, and new ones are no longer forming, the galaxy itself ceases to exist. This occurs when all of the galaxy's gas is ejected, making it impossible for new stars to form.According to a study...
TEHRAN (Press Shia Agency) – How old is the universe? Astronomers have been homing in on an increasingly precise estimate for its age for decades. Now, a new research paper based on observational data gives of the most precise estimations yet: 13.77 billion years old. - Science news - The research, which was published in the Journal of Cosmology and Astroparticle Physics, analyzed the oldest...
TEHRAN (Press Shia) – At the very largest scale, the Universe consists of a "cosmic web" made of enormous, tenuous filaments of gas stretching between gigantic clumps of matter. - Science news - Or that's what our best models suggest. All we have seen so far with our telescopes are the stars and galaxies in the clumps of matter.So is the cosmic web real, or a figment of our models? Can we...
TEHRAN (Press Shia) – There are nearly 2 billion stars in our galaxy. At least that's what the most current map shows. Astronomers have mapped the most extensive atlas of our Milky Way galaxy yet, including the positions of each and every one of those stars. - Science news - The European Space Agency's Gaia space observatory also tracked the movement, colors and brightness of these stars as...