小行星尺寸 747 将于万圣节飞越地球

小行星尺寸 747 将于万圣节飞越地球

一个 asteroid nearly the size of a Boeing 747 will safely fly past Earth on Halloween at 2:24 上午. 是, experts note.

The massive space rock, known as 2020 UX3, is estimated to have a diameter between 88 和 196 脚, 根据 NASA’s Center for Near Earth Studies (CNEOS). For comparison purposes, the wingspan of a 747 是 225 一英尺长.

It will come within 3.2 million miles of Earth, traveling at roughly 36,000 英里每小时. Its size and its proximity to Earth make it a near-Earth object (NEO).

ASTEROID DISCOVERED 170 YEARS AGO COULD BE WORTH $ 10,000 QUADRILLION

Potentially hazardousNEOs are defined as space objects that come within 0.05 astronomical units and measure more than 460 feet in diameter, according to NASA. 根据一个 2018 报告 put together by Planetary.org, there are more than 18,000 NEOs.

NASA unveiled a 20-page plan 在 2018 that details the steps the U.S. should take to be better prepared for NEOs, such as asteroids and comets that come within 30 million miles of the planet.

一个 recent survey showed that Americans prefer a space program that focuses on potential asteroid impacts over sending humans back to the 月亮 or to Mars.

An asteroid known as 2018VP1 will fly past Earth just before Election Day, NASA previously 说过. It is not consideredpotentially hazardousdue to its small size.

MILE-LONG ASTEROID COULD BE DANGEROUS TO LIFE ON EARTH IN MILLIONS OF YEARS IF IT BREAKS UP: SCIENTISTS

NASA Administrator Jim Bridenstine said in April 2019 that an asteroid strike is not something to be taken lightly and is perhaps Earth’s biggest threat.

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