About one billion years after big bang, huge gas clouds started to pull together due to

In irregular galaxies, quantity of gases and dust is

The star "Sirius" belongs to a constellation named

Typical involving of supernatural beings or events are

The spinning movement of earth is called

Radio waves coming from space were first detected in

Comets and other objects circling around the sun is known as

In a reflecting telescope, a large concave mirror bounces all the light coming through the

Red supergiants are

Unfortunately, Ulysses' orbit is taking it more further away from the

Hubble telescope is powered by

The world's largest reflecting telescope is situated in

The world's largest telescope is situated in

Name of the American space probe is

If a large star with a mass more than that of sun dies, its core collapses so quickly that it could

After the drainage of center, the sun will start to

To date, the most common type of galaxies found in universe, are