Astronomers have found an extrasolar planet around a main sequence star. Which isn’t a big deal. With a radio telescope. Which is.Continue reading “An exoplanet has been found for the first time using radio telescopes”
Five hundred million light-years from Earth, there is a deeply unusual object. It is radio silent for 12 days, then erupts in bright radio bursts. These fast radio bursts occur randomly over four days, then the object goes silent for another 12 days. Astronomers have observed this object for 500 days, and the pattern always repeats, like clockwork. We still aren’t sure what the object is.Continue reading “A Repeating Fast Radio Burst Has Been Found. It Flares for 4 Days and then Remains Silent for 12 Days”
According to the most widely accepted cosmological theories, the first stars in the Universe formed a few hundred million years after the Big Bang. Unfortunately, astronomers have been unable to “see” them since their emergence coincided during the cosmological period known as the “Dark Ages.” During this period, which ended about 13 billion years ago, clouds of gas filled the Universe that obscured visible and infrared light.
However, astronomers have learned that light from this era can be detected as faint radio signals. It’s for this reason that radio telescopes like the Murchison Widefield Array (MWA) were built. Using data obtained by this array last year, an international team of researchers is scouring the most precise radio data to date from the early Universe in an attempt to see exactly when the cosmic “Dark Ages” ended.Continue reading “Searching for the End of the Universe’s “Dark Age””
In May of 1999, the Berkeley SETI Research Center launched a citizen-science program that would make the Search for Extra-Terrestrial Intelligence (SETI) open to the public. The brainchild of computer scientist David Gedye, this program would rely on large numbers of internet-connected computers to sort through the volumes of data collected by institutions participating in SETI efforts.
The program was appropriately named [email protected] and would rely on the computers of volunteers to process radio signals for signs of transmissions. And after twenty years, the program recently announced that it has gone into hibernation. The reason, they claim, is that the program’s network has become too big for its own britches and the scientists behind it need time to process and share all the results they’ve obtained so far.Continue reading “[email protected] is on Pause. Unfortunately, it’s not Because They’ve Discovered Aliens”
Hundreds of millions of light years away, a supermassive black hole sits in the center of a galaxy cluster named Ophiuchus. Though black holes are renowned for sucking in surrounding material, they sometimes expel material in jets. This black hole is the site of an almost unimaginably powerful explosion, created when an enormous amount of material was expelled.Continue reading “Astronomers Have Recorded the Biggest Explosion Ever Seen in the Universe”
At present, scientists can only look for planets beyond our Solar System using indirect means. Depending on the method, this will involve looking for signs of transits in front of a star (Transit Photometry), measuring a star for signs of wobble (Doppler Spectroscopy), looking for light reflected from a planet’s atmosphere (Direct Imaging), and a slew of other methods.
Based on certain parameters, astronomers are then able to determine whether a planet is potentially-habitable or not. However, a team of astronomers from the Netherlands recently released a study in which they describe a novel approach for exoplanet-hunting: looking for signs of aurorae. As these are the result of interaction between a planet’s magnetic field and a star, this method could be a shortcut to finding life!Continue reading “Detecting Exoplanets Through Their Exoauroras”
A team of scientists in Canada have found a Fast Radio Burst (FRB) that repeats every 16 days. This is in stark contrast to other FRBs, which are more sporadic. Some of those sporadic FRBs occur in clusters, and repeat irregularly, but FRBs with a regular, repeatable occurrence are rare.Continue reading “A Rare Fast Radio Burst has been Found that Actually Repeats Every 16 Days”
The world’s largest and most sensitive radio telescope is officially open for business according to Xinhua, China’s official state-run media. The FAST Radio Telescope saw fist light in 2016 but has been undergoing testing and commissioning since then. FAST stands for Five-hundred meter Aperture Spherical Telescope.Continue reading “China’s 500-Meter FAST Radio Telescope is Now Operational”
A team of scientists working with the Murchison Widefield Array (WMA) radio telescope are trying to find the signal from the Universe’s first stars. Those first stars formed after the Universe’s Dark Ages. To find their first light, the researchers are looking for the signal from neutral hydrogen, the gas that dominated the Universe after the Dark Ages.Continue reading “Astronomers Are About to Detect the Light from the Very First Stars in the Universe”
After years of construction, China’s new radio telescope is in action. The telescope, called FAST (Five-hundred-meter Aperture Spherical Radio Telescope) has double the collecting power of the Arecibo Observatory in Puerto Rico, which has a 305 meter dish. Until now, Arecibo was the world’s largest radio dish of its type.Continue reading “China’s FAST Telescope, the World’s Largest Single Radio Dish Telescope, is Now Fully Operational”