-
The spyglass is invented
Galileo did not invent the telescope. But he did modify a curiosity called the spyglass that in 1609 was beginning to be sold by spectacle makers and peddlers in Europe. -
Spiral Nebulae was discovered
Lord Rosse used his
largest telescope to see the
spiral structure of M51. Rosse was born on June 17th 1800 -
The first Permanent Solar Telescope was built.
the Snow Solar
Telescope was built and then
moved to its permanent home
atop Mount Wilson. -
the first reflecting telescope was built
created by sir Issac Newton in Britain. Newton was born on Jan 4 1643