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Why in the News?
A team of astronomers has discovered three massive near-Earth asteroids hiding in the glare of the Sun.
Key Points:
About
- Discovered Asteroids:
- 2022 AP7
- Potentially hazardous to Earth
- It could potentially lead to a “mass extinction event”.
- 2021 LJ4
- 2021 PH27
- 2022 AP7
Potentially Hazardous Asteroid (PHA):
- It means that an asteroid has the potential to make threatening close approaches to the Earth.
Mass Extinction event:
- It is any circumstance that results in the loss of a significant portion of Earth’s living species within a relatively short period of geologic time.
What are Near Earth Objects?
- A near-Earth object is an asteroid or comet which passes close to the Earth’s orbit.
- Composed mostly of water ice with embedded dust particles.
- They occasionally approach close to the Earth as they orbit the Sun.
