Earth in Space

The Universe is estimated to be born.....

• 14.2 billion years ago

• 13.8 billion years ago

• 14.2 million years ago

• 13.8 million years ago

Answer explanation

Our universe was born about 13.7 billion years ago in a massive expansion that blew space up like a gigantic balloon.

That, in a nutshell, is the Big Bang theory, which virtually all cosmologists and theoretical physicists endorse.

Which theory gained maximum acceptance for explaining the formation of the universe?

• Sun Theory

• Universe Theory

• Bigbang Theory

• All of these

Answer explanation

The Big Bang hypothesis states that all of the current and past matter in the Universe came into existence at the same time, roughly 13.8 billion years ago.

The planets of the Solar System move around the sun in a repeating path termed?

• Circles

• Planetary paths

• Orbits

• Ellipses

Answer explanation

An orbit is a regular, repeating path that one object takes around another object or center of gravity.

Which one of the following is the correct sequence of the planets closet to the Sun?

• Mercury, Earth, Mars and Jupiter

• Mercury, Venus, Earth and Mars

• Earth, Mars, Jupiter and Neptune

• Earth, Mars, Venus and Jupiter

Who out of the following contributed to establishing a correct solar system model?

• Nicolaus Copernicus

• Michael Schumacher

• David Brothers

• Javier Pena

Scientists estimated that there are billions of galaxies in our Universe

• True

• False

Our solar system was formed over 8.2 billion years ago.

• True

• False

Answer explanation

The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula.

Mars is the largest of all the terrestrial planets.

• True

• False

Answer explanation

Of the four terrestrial planets, Earth is the largest, and the only one with extensive regions of liquid water

In ancient times people use to believe that the Earth was the centre of our Solar system.

• True

• False

Mercury is a terrestrial planet.

• True

• False