Large pieces of space rock with irregular shapes are called asteroids.

Here's why:

* Asteroids are rocky, airless celestial bodies that orbit the Sun, primarily found in the asteroid belt between Mars and Jupiter.

* Meteoroids are smaller pieces of rock or metal in space.

* Meteors are meteoroids that enter Earth's atmosphere and burn up, creating a streak of light.

* Meteorites are meteoroids that survive their trip through the atmosphere and land on Earth.

While some asteroids can be quite large, the term "asteroid" itself doesn't specify their size or shape.