NASA says that nearly 100 tons of dust-sized space particles bombard Earth every day. A vehicle-sized asteroid hits Earth's atmosphere once every year, creating a giant fireball although it burns up before reaching the planet's surface.
According to NASA, every 2000 years, an asteroid the size of a football field hits Earth and causes significant damage to the area.
NASA studies these space rocks with the help of its space and ground-based telescopes such as the NEOWISE telescope. If you're thinking about planet-killing asteroids, they only come along only once every few million years.
Although it might not be a planet killer, NASA has warned that a dangerous asteroid is hurtling towards Earth today.NASA's Planetary Defense Coordination Office has issued an alert against an asteroid named Asteroid 2022 WH2.Read more on tech.hindustantimes.com