EVERYDAY SCIENCE

Detailed explanation-1: -Our Sun is one of at least 100 billion stars in the Milky Way, a spiral galaxy about 100, 000 light-years across.

Detailed explanation-2: -The Milky Way contains between 100 and 400 billion stars and at least that many planets.

Detailed explanation-3: -In our own galaxy (the Milky Way) there are at least 300 billion stars. We call stars “Suns” when they are the centre of a planetary system, like how Earth and the other planets orbit our sun.

Detailed explanation-4: -There are likely to be many more planetary systems out there waiting to be discovered! Our Sun is just one of about 200 billion stars in our galaxy. That gives scientists plenty of places to hunt for exoplanets, or planets outside our solar system.

Detailed explanation-5: -Astronomers had estimated that the observable universe has more than 100 billion galaxies. Our own Milky Way is home to around 300 billion stars, but it’s not representative of galaxies in general.