Space
100

The third planet from the sun

What is earth?

200

The day on which the Sun's direct rays cross the celestial equator is called this

What is the equinox?

300

This person invented the telescope

Who is Hans Lippershey?

400

This term describes the alignment of three celestial bodies

What is syzygy?

500

The farthest object from the sun is THIS object

What is 90377 Sedna?