7th November 1631 A transit of Mercury occurs. Many astronomers set up to capture Mercury's movement in front of the Sun. However only...

10th October 1846 Triton, the largest natural satellite of Neptune, is discovered by English astronomer William Lassell. The image of...

9th September 1892 Amalthea, a moon of Jupiter, is discovered by Edward Emerson Barnard using the 36 inch (91 cm) refractor telescope at...

This month . . . Artificial Satellites. From the launch of Sputnik which lead to the start of the Space Race between the Soviet Union...

15th August 1977 The Wow! signal is received by the Big Ear radio telescope at Ohio State University. The original record, preserved by...

Monday 6th September 2021 6:30 to 8pm ​ Presented by Rick Benitez. Rick Benitez is Professor Emeritus of Philosophy at the University of...

4th February 1600 Tycho Brahe and Johannes Kepler meet for the first time near Prague. Kepler arrived at Tycho’s new observatory, Benatek...

Happy New Year! Elizabeth Cocking continues this astronomical blog post sequence in 2023. Each month she looks back on astronomical...

NASA becomes operational (1958) ; Luna 3 photographs the far side of the Moon (1959) : the Parker solar probe approaches the Sun (2018)

13th August 1898 The asteroid Eros is discovered by the German astronomer Gustav Witt at the Urania Observatory in Berlin, and...