In a first-ever near-infrared study of a recurrent nova beyond the Milky Way, astronomers have discovered exceptionally high temperatures and unexpect
Category: space – Page 54
Rare exoplanet orbits twin stars in ‘Star Wars’-like twist
Astronomers have discovered a planet that orbits at a 90-degree angle around a rare pair of strange stars—a real-life ‘twist’ on the fictional twin suns of Star Wars hero Luke Skywalker’s home planet of Tatooine.
The exoplanet, named 2M1510 (AB) b, orbits a pair of young brown dwarfs —objects bigger than gas-giant planets but too small to be proper stars. Only the second pair of eclipsing brown dwarfs known—this is the first exoplanet found on a right-angled path to the orbit of its two host stars.
An international team of researchers led by the University of Birmingham made the surprise discovery using the European Southern Observatory’s Very Large Telescope (VLT). The brown dwarfs produce eclipses of one another, as seen from Earth, making them part of an “eclipsing binary.”
Antikythera Mechanism’s intricate gears: Simulations of ancient astronomical device reveal potential jamming issues
A pair of physicists at Universidad Nacional de Mar del Plata, in Argentina, have created a computer simulation of the famed Antikythera Mechanism and in so doing have found that manufacturing inaccuracies may have caused the device to jam so often it would have been very nearly unusable—if it was in the condition it is now. Esteban Szigety and Gustavo Arenas have posted a paper on the arXiv preprint server describing the factors that went into their simulation and what it showed.
In 1901, divers looking for sponges off the coast of the Greek island, Antikythera, discovered a mechanical device among the ruins of a sunken ship. The mysterious device was dated to the late second or early first century BCE, and from that time on there has been much debate in the scientific community regarding its purpose.
Some markings on the device suggest it could be used to track time and astronomical events and even predict some others, such as the arrival of a comet, courtesy of its intricate gears and pointing indicators, by turning its hand crank. Since only one of the devices has ever been found, some have suggested it had an otherworldly origin.
Crystal clues on Mars point to watery and possibly life-supporting past
A QUT-led study analyzing data from NASA’s Perseverance rover has uncovered compelling evidence of multiple mineral-forming events just beneath the Martian surface—findings that bring scientists one step closer to answering the profound question: did life ever exist on Mars?
The QUT research team led by Dr. Michael Jones, from the Central Analytical Research Facility and the School of Chemistry and Physics, includes Associate Professor David Flannery, Associate Professor Christoph Schrank, Brendan Orenstein and Peter Nemere, together with researchers from North America and Europe.
The paper, “In-situ crystallographic mapping constrains sulfate precipitation and timing in Jezero crater, Mars” is published in Science Advances.
