Recent Asteroids: Fly By Or Impact
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Dinosaurs once dominated Earth during the late Cretaceous period but were wiped out by a massive asteroid that had the destructive force of a billion suns. Earth itself remained, prompting the question of whether the planet could be immune to an asteroid and what it would take for it to be completely destroyed. Scientists keep track of asteroids as even the slightest change in trajectory can cause them to collide with Earth, which would cause destruction across the planet. NASA and the ESA have been monitoring thousands of asteroids in order to prevent any impacts from potentially hazardous space rocks.
In the lush, vibrant world of the late Cretaceous period, dinosaurs dominated Earth completely. Huge and terrifying, these animals ruled the land, the air, and the seas with uncontested and unassailable dominance. Nevertheless, they were unaware of a massive rock that was racing toward the planet that was hundreds of kilometers broad and had the destructive force of a billion suns, in the video published on March 2, 2023, by Factnomenal, as “NASA is WORRIED! 3 Skyscraper-size Asteroids May Hit Earth“, below:
But we have also become aware of the 2023 CX1 that was discovered less than seven hours before impact on Feb 13, 2023, at 02:59 UTC, more details in excerpt from wikipedia, in italics, below:
2023 CX1, initially known under temporary designation Sar2667, was a metre-sized asteroid or meteoroid that entered Earth’s atmosphere on 13 February 2023 02:59 UTC and disintegrated as a meteor over the coast of Normandy, France along the English Channel. It was discovered less than seven hours before impact, by Hungarian astronomer Krisztián Sárneczky at Konkoly Observatory‘s Piszkéstető Station in the Mátra Mountains, Hungary. 2023 CX1 is the seventh asteroid discovered before impacting Earth and successfully predicted, and the third of those for which meteorites have been recovered. Before it impacted, 2023 CX1 was a near-Earth asteroid on an Earth-crossing Apollo-type orbit.
In this video, we’ll talk about the potential dangers of the asteroid’s approach to Earth in March 2023. Can we change its course? If you’re interested in space news, then you definitely need to watch this video! In it, we’ll discuss the potential dangers of the asteroid’s approach to Earth in March 2023 and discuss ways we can try to save the planet. Whether you’re a student, a citizen, or just curious, this video is a must-watch! In the video published on Jan 10, 2023, by Space News, as “It’s Approaching Earth in March 2023! Can We Change its Course?” below:
In case you need a refresher on what Near-Earth object (mentioned in the videos above) is, please refer to the excerpt from wikipedia, in italics, below:
A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (perihelion) is less than 1.3 astronomical units (AU). If a NEO’s orbit crosses the Earth’s orbit, and the object is larger than 140 meters (460 ft) across, it is considered a potentially hazardous object (PHO). Most known PHOs and NEOs are asteroids, but a small fraction are comets.
There are over 30,503 known near-Earth asteroids (NEAs) and over a hundred known short-period near-Earth comets (NECs). A number of solar-orbiting meteoroids were large enough to be tracked in space before striking the Earth. It is now widely accepted that collisions in the past have had a significant role in shaping the geological and biological history of the Earth. Asteroids as small as 20 metres (66 ft) in diameter can cause significant damage to the local environment and human populations. Larger asteroids penetrate the atmosphere to the surface of the Earth, producing craters if they impact a continent or tsunamis if they impact the sea. Interest in NEOs has increased since the 1980s because of greater awareness of this potential danger. Asteroid impact avoidance by deflection is possible in principle, and methods of mitigation are being researched.
Two scales, the simple Torino scale and the more complex Palermo scale, rate the risk presented by an identified NEO based on the probability of it impacting the Earth and on how severe the consequences of such an impact would be. Some NEOs have had temporarily positive Torino or Palermo scale ratings after their discovery.
Since 1998, the United States, the European Union, and other nations are scanning the sky for NEOs in an effort called Spaceguard. The initial US Congress mandate to NASA to catalog at least 90% of NEOs that are at least 1 kilometre (3,300 ft) in diameter, sufficient to cause a global catastrophe, was met by 2011. In later years, the survey effort was expanded to include smaller objects which have the potential for large-scale, though not global, damage.
NEOs have low surface gravity, and many have Earth-like orbits that make them easy targets for spacecraft. As of January 2019, five near-Earth comets and five near-Earth asteroids have been visited by spacecraft. A small sample of one NEO was returned to Earth in 2010, and similar missions are in progress. Preliminary plans for commercial asteroid mining have been drafted by private startup companies, either through the use of robots or even by sending private commercial astronauts to act as space miners.
Gathered, written, and posted by Windermere Sun-Susan Sun Nunamaker More about the community at www.WindermereSun.com
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