people coming
the telescope
The answer is The Microscope.
The Telescope
microscope
His/Her Majesty's Ship Beagle. It is the ship that Charles Darwin made his famous voyage of discovery on. The trip has been memorialized in the book The Voyage of the Beagle. and been parodied in The Voyage of the Space Beagle.
tt
Ferdinand Magellan's voyage proved it was possible to sail from Europe to the eastern coast of Asia. He used a route around the southern tip of South America. He was the first to accomplish this voyage.
"Discovery", "anticipation", "hope", "togetherness".
Sir Francis Drake got "The Pelican" at the start of his first voyage of discovery, but then changed it to "Golden Hind", so at the start of his first voyage of discovery.
Voltmeters were made possible by an 1819 discovery by Hans Oersted. The first voltmeter were made soon after that.
I would say optics, IE the Microscope.
X-ray diffraction