Home Science How Can Earth Avoid An Asteroid Strike? (VIDEO)

How Can Earth Avoid An Asteroid Strike? (VIDEO)

by News Desk
0 comment

If a meteor actually hits the earth, it is called a meteorite. Every day, 30 pebble-sized objects hit the earth.

Sixty-six million years ago, a six-mile-wide asteroid hit what is now the Yucatan Peninsula at 40,000 miles per hour. The impact caused wildfires around the world, a global tsunami, and his three-quarters extinction of all species on Earth, including the dinosaurs.

Most space objects now burn up in the atmosphere, and dozens of small meteorites hit Earth every day.

In 2013, it was a normal Friday morning in Chelyabinsk, Russia. meteorite It was about a 50-foot cross blasted in the air with a fireball.

It reminds us of the dangers that lurk in our solar system. Hollywood has portrayed the dangers of space rocks in movies such as 2021’s Don’t Look Up. But how real is that threat? space Almost unbelievably empty.

But occasionally fickle rocks — what scientists call near-Earth objects — pass through the neck of the forest. Most are asteroids, some are comets.

The Moon is left with over 100,000 craters from both impacts over billions of years. Venus and Mars survived their share of the bombardment, but the skies above Earth offer some protection. Many appear as shooting stars before completely burning up. Most are smaller than a grain of sand. The Planetary Society estimates that if a rock the size of a car were heading in our direction, the atmosphere would burn it to the size of a microwave oven.

If a meteor actually hits the earth, it is called a meteorite. About 30 pebble-sized objects hit the Earth at an average speed of 12 miles per second each day. A house-sized meteorite hits every few centuries. About every million years, a rock the size of a mountain impacts. Take, for example, the 6-mile-wide rock that blew up Earth 66 million years ago with a force of 100 trillion tons of TNT, wiping out the dinosaurs.

Telescopes on the ground and in orbit monitor nearby Earth objects, and officials track more than 30,000 of them.

A third are over 460 feet wide. NASA It will be big enough to threaten the earth. Astronomers say there hasn’t been a large asteroid in orbit that hits Earth for at least 100 years.

Like the 1,200-foot-wide Apophis, it’s set to pass within 19,000 miles of Earth in 2036, but the agency admits its blind spots hide about 15,000 objects near Earth. .

Sky surveys can miss asteroids with unusual orbits, and the sun can obscure large rocks. In 2020, a car-sized asteroid called 2020 QG zoomed to just 2,000 miles from the Earth’s surface. Astronomers didn’t detect it until hours before zooming in at 11 miles per second.

Engineers are preparing to act in case a deadly asteroid is heading towards Earth one day.

In September, after a 10-month journey, NASA’s Double Asteroid Redirect Test (DARTS) blasted directly into the 560-foot-wide asteroid. The goal was to see if a direct hit would change the rock’s trajectory.

Another nearby rover recorded the impact, confirming that the rover pushed the rock slightly off course.

Demorphos posed no danger to Earth, but engineers say tests show it is theoretically possible for future missions to safely move the killer asteroid away from Earth. Hollywood will probably continue to imagine the possibilities, but Planetary Defenders will continue to keep its eyes on the skies, making the universe a little less dangerous than it used to be.

You may also like

Leave a Comment

Copyright ©️ All rights reserved. | Canadian Trends