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“#How China could win 2021’s space race and take Mars as its prize” Looking at its achievements over the past decade, nobody would doubt China is aiming to win the new space race. Not only has it been the only country to land on the Moon in about 40 years, and the first to soft-land…
“#Gaseous mix up: Scientists thought there could be life on Venus, but there’s not” In September 2020, astronomers announced the possible detection of phosphine on Venus. On our own world, phosphine is mostly produced by life, and the detection of this gas in the atmosphere of Venus could have been an intriguing hint of alien…
“#Satellites orbiting Earth are increasing like crazy — how do we prevent them from crashing?” In recent years, satellites have become smaller, cheaper, and easier to make with commercial off the shelf parts. Some even weigh as little as one gram. This means more people can afford to send them into orbit. Now, satellite operators…
“#Vá! 3 billion years ago, Mars looked a lot like Iceland” More than three billion years ago, Mars was home to vast oceans, and a new study shows this world may have once looked familiar — especially to the residents of Iceland. The Curiosity rover has been exploring Gale Crater on Mars since 2012. That…
“#Earth has been habitable for billions of years — simulations show it was ‘just luck’” It took evolution 3 or 4 billion years to produce Homo sapiens. If the climate had completely failed just once in that time then evolution would have come to a crashing halt and we would not be here now. So…
“#NASA delays Juno spacecraft’s retirement after detecting mysterious radio waves” The Juno spacecraft, orbiting Jupiter since 2016, has a new lease on life, thanks to NASA. This robotic explorer is now due to continue its mission, at least until September 2025. A mission extension recently granted by NASA extends the Juno program means the spacecraft…
“#New giant ‘radio galaxies’ help shed light on the history of the universe” Two giant radio galaxies have been discovered with South Africa’s powerful MeerKAT telescope, located in the Karoo region, a semi-arid area in the southwest of the country. Radio galaxies get their name from the fact that they release huge beams, or ‘jets’,…
“#Hubble spots remains of a supernova humans saw explode 1700 years ago” The opening years of the Fourth Century saw work begin on St. Peter’s Basilica in Rome, and the astronomer Pappus of Alexandria wrote details of his observation of an eclipse of the Sun. In the southern hemisphere, a star was seen erupting within…
“#Astronomers just detected the oldest and most distant quasar ever” More than 13 billion light years from Earth, the quasar J0313–1806 radiates vast quantities of electromagnetic radiation. This body, formed just 670 million years after the Big Bang, is seen shining with 1000 times the total light produced by the Milky Way Galaxy. The supermassive…
“#Thank god, 2021 is shorter than 2020 by 1 second — here’s why” The Earth is spinning faster than it has at any time in the last 50 years, careful study of our planet reveals. Each of the 28 shortest days ever measured came in 2020. It is possible this may require shortening the standard…