SOLAR SYSTEM

Detailed explanation-1: -Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere.

Detailed explanation-2: -At 5.4 kilometers in diameter, the largest known potentially hazardous asteroid is Toutatis. By comparison, asteroids that populate the main asteroid belt between Mars and Jupiter, and pose no threat to Earth, can be as big as 940 kilometers (about 583 miles) across.

Detailed explanation-3: -asteroid, also called minor planet or planetoid, any of a host of small bodies, about 1, 000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring called the asteroid belt.

Detailed explanation-4: -They are generally small but some has the diameter of 1000 km. Asteroids are mirror planets whose orbits lie between Jupiter and Mars.

Detailed explanation-5: -The 1-kilometer object produces a milder explosion of “only” 6 × 104 megatons (equivalent to an earthquake of magnitude 9.4 on the Richter scale). On its way to the impact, the asteroid pushes aside the air in front of it creating a hole in the atmosphere.