How many near Earth asteroids are there? Check horrifying number | Tech News

How many near Earth asteroids are there? Check horrifying number

Scientists have discovered a horrifying number of Near-Earth asteroids and the number is increasing by the day.

By: HT TECH
| Updated on: Oct 14 2022, 18:30 IST
Joy! NASA’s asteroid mission achieved mission impossible, created history
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1/6 Nasa’s DART was the first demonstration of the “kinetic impactor” method of asteroid mitigation. This was the first time, when humans altered the path of a celestial body purposefully. (AFP)
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2/6 NASA chief Bill Nelson said, “All of us have a responsibility to protect our home planet. After all, it’s the only one we have. This mission shows that NASA is trying to be ready for whatever the universe throws at us.” He added that the US agency has proven that it can defend the planet. (via REUTERS)
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3/6 Before the crash, asteroid Dimorphous took about 11 hours and 55 minutes to orbit the larger asteroid Didymos, whereas, post crash, it took only 11 hours and 23 minutes to orbit the larger asteroid. (via REUTERS)
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4/6 DART impact has shortened the orbit by 32 minutes. None of these space rocks - Dimorphous as well as Didymos pose any threat to our planet, hence it was an ideal target to carry out the DART mission. At the time of collision, the DART spacecraft was traveling at 14000 (22,530-kmph) miles per hour. (via REUTERS)
Asteroids
5/6 The DART team is currently measuring how efficiently the spacecraft transferred its momentum to the asteroid. “DART has given us some fascinating data about both asteroid properties and the effectiveness of a kinetic impactor as a planetary defense technology. The DART team is continuing to work on this rich dataset to fully understand this first planetary defense test of asteroid deflection,” said Nancy Chabot, the DART coordination lead at the Johns Hopkins Applied Physics Laboratory in a press statement. (via REUTERS)
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6/6 Didymos, the larger asteroid of the binary pair is about a half mile (780 meters or 2559 feet) in diameter. The moonlet, Dimorphos, is about 525 feet (160 meters) in diameter. (via REUTERS)
Asteroids
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The very first discovered asteroid was the Ceres Asteroid found in 1801. (NASA)

A horrifying number of near-Earth asteroids have been found and the count is growing by the day. More than 30000 near-Earth asteroids have been found! To be specific, there are 30039 near-Earth asteroids. A Phy.org report explains that these rocky bodies orbit around the Sun on a path that brings them close to Earth's orbit. Surprisingly, the majority of these asteroids were discovered over the last 10 years, which shows that humanity's ability to detect potentially hazardous asteroids is rapidly developing.

However, near-Earth asteroids are around a third of the roughly one million asteroids (specifically 1113527 asteroids) discovered so far in our solar system. NASA says that most of these asteroids reside in the asteroid belt between Jupiter and Mars.

What are near-Earth asteroids

NASA's Jet Propulsion Laboratory (JPL) accurately characterizes the orbits of all known near-Earth objects, “predicts their close approaches with Earth, and makes comprehensive impact hazard assessments in support of the agency's Planetary Defense Coordination Office at NASA Headquarters in Washington. ”

NASA defined near-Earth objects, which are asteroids and comets with orbits within 120 million miles or 195 million kilometers of the Sun. This simply means they can circulate through the Earth's orbital neighborhood. Generally, most of the near-Earth objects are asteroids that range in size from about 10 feet which is around a few meters to nearly 40 kilometers across.

Do you know? Scientists are researching and cataloguing Asteroids for more than two centuries since the very first asteroid, which is the Ceres Asteroid, discovered in 1801 by Giuseppe Piazzi. Surprisingly, nearly one hundred years later, around 30 Km wide Eros was discovered on 13 August 1898 by Carl Gustav Witt and Felix Linke at the Urania Observatory in Berlin.

Should we worry?

Marco Micheli, Astronomer at ESA's Near-Earth Object Coordination Center explained that "Of course, any asteroid discovered near Earth qualifies as a near-Earth asteroid, but many are found far from home. " The report mentions that 1425 asteroids with a "non-zero" chance of impact are under observation, the NEOCC's Asteroid Risk List is constantly updated on all the possible asteroids.

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First Published Date: 14 Oct, 18:29 IST
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