# What is an Asteroid? NASA defines what these dangerous objects in sky are | Photos (HT Tech) > 2022 has witnessed numerous asteroid flybys, some of which have come dangerously close to Earth. So, amidst all the asteroid sightings, know what an asteroid is, according to NASA. # What is an Asteroid? NASA defines what these dangerous objects in sky are ## 2022 has witnessed numerous asteroid flybys, some of which have come dangerously close to Earth. So, amidst all the asteroid sightings, know what an asteroid is, according to NASA. Aug 05 2022, 16:05 IST ![Follow on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/follow-us-facebook.png) ![Follow on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/follow-us-facebook-hover.png) ![Share](https://images.hindustantimes.com/tech/static/revamp/images/png/Share.png) ![Share](https://images.hindustantimes.com/tech/static/revamp/images/png/Shareclicked.png) ![Share on WhatsApp](https://images.hindustantimes.com/tech/static/revamp/images/png/whatsapp.png) ![Share on WhatsApp](https://images.hindustantimes.com/tech/static/revamp/images/png/whatsapp-hover.png) ![Share on Twitter](https://images.hindustantimes.com/tech/static/revamp/images/png/twitter.png) ![Share on Twitter](https://images.hindustantimes.com/tech/static/revamp/images/png/twitter-hover.png) ![Share on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/facebook.png) ![Share on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/facebook-hover.png) ![Bookmark](https://images.hindustantimes.com/tech/static/revamp/images/png/Bookmark.png) ![Bookmarked](https://images.hindustantimes.com/tech/static/revamp/images/png/Bookmarked.png) An asteroid is a small, rocky object hurtling through the sky. When seen in a telescope, an asteroid appears as a point of light, according to NASA. Most asteroids are found in a ring between the orbit of Mars and Jupiter called the asteroid belt. (Pixabay) photos 1/5 Asteroids have several shapes, they may be spherical, elongated, or oddly shaped. Some asteroids even have their own satellites! Asteroids also vary in size. From Vesta, the largest at about 530 kilometers in diameter, to asteroids that are less than 10 meters in diameter, they can be found in all shapes and sizes. (Pixabay) 2/5 Asteroids are also called minor planets. These celestial objects are the remains of the period during which our solar system formed, over 4.6 billion years ago. According to NASA, the current known asteroid count is 1,113,527. (HT_PRINT) 3/5 Asteroids can potentially threaten life on Earth. Apocalyptic movies like Deep Impact, Armageddon and Don't Look Up have always explored the ‘What Ifs’ of world destruction, with the most famous means of world destruction being asteroids crashing into Earth. (Pixabay) 4/5 ### You may be interested in To counter this, NASA had readied itself to potentially defend the planet against a very similar threat that is posed by asteroids by preparing the DART mission. It involves smashing a spacecraft into an oncoming asteroid at a speed of nearly 23,000kph. This knowledge will be used if an actual asteroid threatens to crash against the Earth. It will help avert an Armageddon on Earth and perhaps, even save humanity from extinction. 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