Astronomical happenings in December
IN THIS MONTH 23 December 1672 Italian astronomer Giovanni Domenico Cassini observes Rhea, one of Saturn's Moons. Cassini discovered four...
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Elizabeth Cocking
- Feb 28, 2022
- 3 min
In this month: March 2022
5th March 1616 On this day in 1616 the Roman Catholic Church adds "" (On the Revolutions of the Heavenly Spheres) by Nicolaus...
Andrew Wood
- Oct 12, 2020
- 6 min
A Day in My Life of The Solar System
"I set out to observe as many Solar System objects as I could..."
Elizabeth Cocking
- Jun 30, 2019
- 2 min
In this month: July 2019
5th July 1687 The book Principia is published by Sir Isaac Newton. Written in Latin with the title Philosophiæ Naturalis Principia...
Elizabeth Cocking
- Mar 31, 2019
- 2 min
In this month: April
15th April 1970 Humans travel the furthest in space when the Apollo 13 crew reach 400,171 km from Earth in an attempt to return to Earth...
Elizabeth Cocking
- May 1, 2018
- 1 min
Did you know? - the planets
The Earth is not a sphere ! It is an oblate spheroid. Due to its rotation it bulges out at the equator about 43 km more than at the...
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