Astronomers detect possible radio emission from exoplanetDate:December 16, 2020Source:Cornell UniversitySummary:By monitoring the cosmos with a radio telescope array, an international team of scientists has detected radio bursts emanating from the constellation Boötes. The signal could be the first radio emission collected from a planet beyond our solar system.
Illustration of a 'hot Jupiter' exoplanet orbiting nearby star (stock image).Credit: © dottedyeti / stock.adobe.com
Currently, the only way to make oxygen and hydrogen (used for breathing and fuel, respectively) from the salty water found on Mars is by way of electrolysis – a process that is not only expensive, but would also be difficult to perform on the planet’s surface.And yet, the methods of electrolysis are not all the same. Case in point, researchers at Washington University in St Louis have recently developed a simplified and less costly version of electrolysis, capable of performing well under regular terrestrial conditions, as well as conditions similar to those prevailing on the Red Plant itself.The research was published in the journal Proceedings of the National Academy of Sciences.
More efficient electrolysis could allow astronauts to extract oxygen and hydrogen from water while on the surface of Mars. Image: Aynur Zakirov via pixabay.com
It has been a busy year of research aboard the International Space Station. In November, we celebrated the 20th year of continuous human presence aboard the space station, which so far has hosted 242 people and more than 3,000 science experiments.
A tool for testing Image credit: NASA
Bubbles that could improve medicine deliveryImage credit: NASA
Picturing our planetImage credit: NASA
A new Dragon arrivesImage credit: NASA
Summary:From an observatory high above Chile's Atacama Desert, astronomers have taken a new look at the oldest light in the universe. Their observations, plus a bit of cosmic geometry, suggest that the universe is 13.77 billion years old - give or take 40 million years.
However, Venus once likely had an Earth-like climate. According to recent climate modelling, for much of its history Venus had surface temperatures similar to present day Earth. It likely also had oceans, rain, perhaps snow, maybe continents and plate tectonics, and even more speculatively, perhaps even surface life.Less than one billion years ago, the climate dramatically changed due to a runaway greenhouse effect. It can be speculated that an intensive period of volcanism pumped enough carbon dioxide into the atmosphere to cause this great climate change event that evaporated the oceans and caused the end of the water cycle.
A portion of Alpha Regio, a topographic upland on the surface of Venus, was the first feature on Venus to be identified from Earth-based radar. NASA/JPL
Arecibo is dead. Should we build its replacement on the Moon?NASA may finally be serious about the idea of building a large radio telescope in a lunar crater.
Since the 1960s, astronomers have dreamed about building radio telescopes on the farside of the Moon, which would shield them from Earth-based interference.
A decades-old idea from lunar scientist Richard Vondrak, who worked at the Apollo Science Operations Center during the moon landing program, proposed using lunar craters to build radio telescopes like the Arecibo Observatory in Puerto Rico. Here, an artist’s concept shows how three telescopes could be used separately or combined to create a giant instrument.
Discover the secrets of the Northern Pinwheel GalaxyThink you know the big spiral M101? Take a deep dive into its myriad details, and you’ll know it like never before.
M101, the Northern Pinwheel Galaxy in Ursa Major, is thought to have undergone tidal interaction with the dwarf galaxy NGC 5477, which lies off the right edge of this image. This triggered formation of multiple bright star-forming emission nebulae known as HII regions, which you can observe through your telescope.All Images: Rod Pommier
When does a star's size violate the laws of physics?James BoytonShreveport, Louisiana
VY Canis Majoris, a red supergiant, has a radius that measures more than 1,400 times that of the SunOona Räisänen