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New Delhi: For the first time, scientists have detected seismic data on a “boomerang earthquake” that occurred underwater. In 2016, a magnitude 7.1 earthquake occurred on the Atlantic bottom, off the coast of Liberia in West Africa.
Examining data from South American and African tectonic plates, scientists found that the earthquake first rushed northeast, then unexpectedly turned and hit the line again. fault in a westerly direction, returning to where it came from. Hence the name “boomerang” earthquake.
If such earthquakes were to strike on dry land, the tremors would be much stronger and cause significant damage. This study can help to better understand and prepare for the physics of boomerang earthquakes. Safer National Geographic.
NASA decodes the mystery behind the unusual gradation of the giant star Betelgeuse
Using data from the Hubble Space Telescope, NASA decoded what caused the mysterious attenuation of a giant star Betelgeuse located more than 500 light years away.
Betelgeuse is a red super giant star that recently swelled in size and then began to darken in October 2019. The star has excited several astronomers because such events in a star are similar to what happens before an explosion of supernova.
Observations now show that Betelgeuse’s unexpected gradation was most likely caused by an immense amount of hot material being ejected into space, forming a cloud of dust that blocked starlight coming from Betelgeuse’s surface. In May of this year, the star returned to its normal brightness. Safer Space.
NASA’s TESS telescope spots 66 new planets outside our solar system
NASA’s TESS Exoplanet Hunting Space Telescope has uncovered 66 new planets in space and spotted nearly 2,100 potentials yet to be confirmed.
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TESS (Transiting Exoplanet Survey Satellite) completed its main two-year assignment on July 4. However, the space telescope will continue to search for new worlds in outer space on an extended mission until September 2022.
TESS was launched in April 2018. It hunts alien worlds using the transit method, which involves monitoring the stars for a small periodic drop in brightness caused when a planet crosses the path between the star and the telescope .
Using the same principle, NASA’s Kepler Space Telescope has found more than 2,600 planets. Although the Kepler Telescope was decommissioned in 2018, data from the telescope still helps scientists spot new planets. Safer American scientist.
Also read: Japanese scientists revive microbes buried in rocks over 100 million years ago
Climate change has led to the extinction of prehistoric woolly rhinos
The ancient woolly rhino, which roamed the planet only a few thousand years ago, has become extinct due to climate change – not overhunting by humans – a new study has found.
Scientists sequenced DNA from the fossils of 14 woolly rhinos and found that these megaherbivores disappeared from Siberia when temperatures were likely too high for the species, which was adapted to live in cold climates.
Originally, it was believed that humans appeared in northeastern Siberia 14,000 or 15,000 years ago, which was pretty much the same as those woolly rhinos became extinct.
However, several other research teams have found evidence of older human settlements, some of which are around 30,000 years old. This indicates that the decline of the woolly rhino does not coincide with the appearance of humans in the area.
An examination of the genomic sequences of these woolly rhinos revealed that their population began to decline around 4,500 years ago, coinciding with a brief period of warming in Siberia, leading scientists to the conclusion that the extinction of the species was linked to climate change. Safer CNN.
Dinosaur species from the T. rex family discovered in the UK
Scientists have discovered a new species of dinosaur that lived 115 million years ago. Researchers at the University of Southampton concluded that the dinosaur came from the same family as the Tyrannosaurus, colloquially known as T. rex. This family of dinosaurs were giant predators, with sharp teeth and claws to help devour their prey.
The dinosaur had large air spaces in some of its bones, which the team said is an extension of its lungs. The team believe these air bags helped him breathe better while lightening his skeleton.
The team pulled all of this information based on four bones discovered in 2019. The bones discovered were from the reptile’s neck, back, and tail. Safer BBC.
Also read: Dinosaurs may also have suffered from cancer – scientists find fossil with diseased bone
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