Monday, September 27

asteroide

asteroide, Bennu, Espacio, impacte la Tierra, NASA, Noticias, objeto, planeta, tierra

They calculate the probability that Bennu hits the Earth | Digital Trends Spanish

In addition to the coronavirus pandemic and the irreversible effects of climate change, we humans have to add a new concern. It is the asteroid Bennu, considered by experts one of the most dangerous for Earth in the Solar System. Now, a team of NASA scientists has accurately calculated the asteroid's trajectory. According to the researchers, until 2300 the object, 500 meters in diameter, has a probability of 0.057 percent of hitting our planet, that is, one in 1,750. During this period, the most dangerous year is 2182, when the possibility of impact is 1 in 2,700 (0.037 percent). POT.These measurements are based on the data collected by the OSIRIS-Rex probe, and anticipate the passage of the asteroid through the so-called gravitational keyhole, in 2135, when the proximity of the Earth c...
asteroide, dinosaurios, Espacio

Asteroid that killed dinosaurs left crater that housed life | Digital Trends Spanish

In May 2020, a study published by the journal Nature revealed the trajectory angle of the meteorite that struck our planet 66 million years ago in the Yucatan Peninsula. A gigantic impact that left a 180 square kilometer crater and produced an underground magma chamber. By the way, I end the life of the dinosaurs. An investigation published this Monday in the magazine Astrobiology ensures that the underground chamber, which persisted for millions of years, sheltered a relevant microbial ecosystem, reported Gizmodo. According to David Kring, lead author of the study and a geologist at the Lunar and Planetary Institute (LPI) in the United States, the hydrothermal system that survived in the crater, called Chicxulub, could help explain the beginning of life on Earth. Artistic recrea...
asteroide, astrónomos, Espacio, galaxia, hubble, jupiter, Marte, materiales, metales, Noticias, planeta, Sistema Solar, tierra

This asteroid “is worth” much more than the entire world economy | Digital Trends Spanish

Psyche is a strange asteroid that is 370 million kilometers from Earth. It is classified as one of the most massive in the main asteroid belt of the Solar System, which orbits between Mars and Jupiter. It is about 226 kilometers wide and unlike most asteroids, which are icy and rocky, Psyche appears to be metallic. Being so dense and metallic, it is thought that Psyche could be the leftover core of a planet that failed during its formation, which is known as a protoplanet. Thanks to observations made using the Hubble Space Telescope, astronomers have been able to get a clearer image of the asteroid. Hubble. "We have seen meteorites that are mostly metal, but Psyche could be unique in that it could be an asteroid that is entirely made of iron and nickel," explains researcher Tracy ...
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This was the descent of OSIRIS-REx on the asteroid Bennu | Digital Trends Spanish

It was a maneuver as singular as it was risky, which fortunately we were able to follow live on the internet. This Tuesday, October 20, NASA's OSIRIS-REx spacecraft descended on the asteroid Bennu, which is currently more than 300 million kilometers from Earth. The mission was to collect samples of the asteroid, which may become a threat to Earth for the next century, according to astronomers. In fact, it is believed to have a one in 2,700 chance of hitting Earth during one of its approaches by the end of the next century. The collection was also intended to find more information about Bennu, which is considered a relic of the Solar System, and can yield data on the molecular precursors of life on our planet. For this reason, it was a transcendental mission which could be observed ...
asteroide, Asteroide Bennu, Espacio, Noticias, ORISIS-REx

They capture flush and close images of the asteroid Bennu | Digital Trends Spanish

The closest recorded images of the asteroid Bennu were filmed on August 11 by the NASA spacecraft, ORISIS-REx, who filmed with his camera NavCam 2 40 meters from the surface of the space element. "These images were captured over a period of three hours: the sequence of images begins approximately one hour after the out-of-orbit maneuver and ends approximately two minutes after the recoil burn. In the middle of the sequence, the spacecraft spins or spins, so that NavCam 2 looks away from Bennu, into space. Soon after, it makes a final turn to point the camera (and sampling arm) at the surface again. Near the end of the sequence, the Nightingale site comes into view at the top of the frame. The large tall rock on the crater rim (top left) measures 43 feet (13 meters) at its longest a...
asteroide, Ceres, Dawn, Espacio, NASA, Noticias, Occator, océanos, volcanes

The asteroid Ceres has buried oceans and volcanoes | Digital Trends Spanish

The asteroid Ceres is a large rock mass that is orbiting somewhere between the planets Mars and Jupiter. And what seemed like a pure piece of space stone, was now vindicated before science. It turns out that NASA's robot spacecraft, Dawn, found evidence of oceans and volcanoes, in seven installments that were published this Monday August 10 in the journals Nature Astronomy, Nature Geoscience, and Nature Communications. Research suggests the possibility of an ocean of salty groundwater. In addition, this would have caused the great Occator crater of Ceres, which seeps from fractures in the rocky crust. "Ongoing activity at Occator brings additional independent evidence of a deep brine layer, and updates Ceres to the realm of ocean worlds," wrote mission scientist Daw...