Astronomy, Space & Time

What do your students know or think they know about what causes night and day, whether the Moon orbits the Earth, and why the Sun keeps glowing? Fi...

This book was written to be intelligible to general readers while also containing facts and figures useful to amateur astronomers at the time of it...

The universe is in a period of accelerated expansion; and the observational evidence such as supernova of Ia type, Cosmic Microwave Background radi...