The aliens came on Oct. 19, 2017. That was the day telescopes picked up a strange object with an odd, elongated shape that moved like a comet — but had no apparent tail. The object, which baffled astronomers and led some to claim it could be a spacecraft sent by intelligent life, was named ‘Oumuamua, ...
In our 13.8 billion-year-old universe, most galaxies, like our Milky Way, form gradually, reaching their large mass relatively late. But a new discovery made with the Atacama Large Millimeter/submillimeter Array (ALMA) of a massive rotating disk galaxy, seen when the universe was only 10 percent of its current age, challenges the traditional models of galaxy ...
Through the noise, young stars reveal their inner workings. An Australian-led team has solved the mystery of how some rapidly rotating young stars pulsate. Delta Scuti stars can now be studied in more detail thanks to the work of Professor Tim Bedding and colleagues. By listening to the beating hearts of these, astronomers have identified ...
Using the data obtained by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), a research team led by Prof. Pan Zhichen and Prof. Li Di from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) discovered an eclipsing binary millisecond pulsar in Globular Cluster (GC) Messier 92 (M92). Named PSR J1717+4307A or M92A, it ...
Chinese scientists are building the world’s most powerful widefield survey telescope of its class in the northern hemisphere near the “Mars Camp” in Qinghai Province. Construction of the telescope is due to be completed by 2022 and it will begin surveying the night sky around 2023. Scientists hope its panoramic view will lead to new ...
Since its discovery in 2017, an air of mystery has surrounded the first known interstellar object to visit our solar system, an elongated, cigar-shaped body named ‘Oumuamua (Hawaiian for “a messenger from afar arriving first”). A new scenario based on computer simulations accounts for all of the observed characteristics of the first known interstellar object ...
The Earth, the solar system, the entire Milky Way, and the few thousand galaxies closest to us move in a vast “bubble” that is 250 million light-years in diameter. Here, the average density of matter is half as large as for the rest of the universe. This is the hypothesis put forward by a theoretical ...
Researchers using ESO’s Very Large Telescope (VLT) have observed an extreme planet where they suspect it rains iron. The ultra-hot giant exoplanet has a day side where temperatures climb above 2400°C, high enough to vaporize metals. Strong winds carry iron vapor to the cooler night side where it condenses into iron droplets. David Ehrenreich, a professor ...
It is already hard to believe that there is ice on Mercury, where daytime temperatures reach 400°C, or 750°F. Now, an upcoming study says that the Vulcan heat on the planet closest to the S°un likely helps make some of that ice. As with Earth, asteroids delivered most of Mercury’s water, the scientific consensus holds. ...
Late last year, news broke that the star Betelgeuse was fading significantly, ultimately dropping to around 40 percent of its usual brightness. The activity fueled popular speculation that the red supergiant would soon explode as a massive supernova. But astronomers have more benign theories to explain the star’s dimming behavior. And scientists at the University of ...
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