On this day in 2012 – June 13th – NASA's NuStarr X-ray telescope was launched.
NuSTAR (Nuclear Spectroscopic Telescope Array) was the first space-based direct-imaging X-ray telescope operating at energies beyond the Chandra X-ray Observatory.
On this day in 2009 – June 19th – NASA's Lunar Reconnaissance Orbiter (LRO) and the Lunar Crater Observation and Sensing Satellite (LCROSS) were launched.
The LCROSS mission confirmed the presence of water in a shadowed crater on the Moon. LRO is still mapping the Moon.
Last edited by Mona - Astronomy; 06/19/1708:58 PM.
On this day in 1710 – June 21st – Scottish mathematician, optician and telescope maker James Short was born.
Short produced the first nearly distortionless telescope mirrors - they were in demand throughout Europe for several decades. He was also the principal British collator and computer of the worldwide 1761 Venus transit observations.
Last edited by Mona - Astronomy; 06/21/1704:27 PM.
On this day in 1730 – June 26th – French astronomer Charles Messier was born.
Messier discovered so many comets that King Louis XV called him a "comet ferret". Messier's name is still known for his catalogue of nebulous objects that might be taken for comets.
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