Showing posts with the label Solar SystemShow all
Why can’t we see planet Venus overhead?

Why can’t we see planet Venus overhead?

earth kvkanjikodelibrary January 25, 2021

Since its orbit is inside Earth’s orbit, the angle between the Sun and Venus is always less than 90°. So, if Venus is …

The galaxy we live in is called the Milky Way. What is the approximate shape of this galaxy?

The galaxy we live in is called the Milky Way. What is the approximate shape of this galaxy?

Milky Way kvkanjikodelibrary December 05, 2020

The Milky Way is a flat spiral galaxy. It has four spiral arms radiating out of the central cluster of stars. Our sola…

How is the temperature of the Sun’s surface measured?

How is the temperature of the Sun’s surface measured?

physics kvkanjikodelibrary October 17, 2020

We measure the temperature of far-away objects by investigating the radiation (mostly light) they emit, and we can do t…

Where does the Sun's energy come from?

Where does the Sun's energy come from?

energy kvkanjikodelibrary October 10, 2020

The Sun’s energy comes from nuclear reactions that is the conversion of hydrogen to helium by the fusion reaction.  Th…

Why are the Sun, Earth, Moon and most astronomical objects spherical?

Why are the Sun, Earth, Moon and most astronomical objects spherical?

Planets kvkanjikodelibrary October 08, 2020

All planets are round because of gravity. When our solar system was forming, gravity gathered billions of pieces of gas…

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