10 Interesting Fact About The science of the universe and our place in it

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• Our universe consists of more than 100 billion galaxies.
• Our earth is the 3rd closest planet of the sun.
• The sun is our closest star and is the brightest star in our galaxy.
• In 1961, Yuri Gagarin became the first human being to reach space.
• There are more than 170 types of chemical elements found in the universe.
• There are more than 18,000 space objects that have been observed by humans.
• Many planets outside our solar system are found to have atmosphere and conditions similar to the earth.
• Our earth rotates on its axis at a speed of around 1,670 km/hour.
• There are about 2 billion planets in our galaxy in the Laik Live zone, which means having conditions that might support life.
• The time needed for light to reach the earth is about 8 minutes from the sun and 4.3 years from our closest star, Proxima Centauri.