3-inch brass refractor
His first telescope, bought at age 11, was this Broadhurst Clarkson 3-inch refractor on a pillar-and-claw mount. His first paper
Patrick's telescopes
Dark Stars Could Leave Scars Across The Cosmos
The scars left behind by exploding ‘dark stars’ could allow astronomers to examine the invisible Universe, a new study has found. Dark matter is the invisible substance believed to suffuse the entire Universe – though as we can only detect it through
