The light year was not discovered. It was made up, by people who kept coming up
with distances like [ 25,866,280,000,000 miles ] in their work, and soon realized that
they were going to need something bigger than a mile, so they invented the light-year.
The new planet that was discovered with water is around 110 light-years away from Earth.
If you mean the star Kepler-11, it is at a distance of about 2000 light-years.
13.7 billion light years is as we can see. This is because the light is still traveling to us and we are yet to see it.
Sir W. Crookes discovered the Properties of Light in 1879.
UV Light was discovered by Johann Wilhelm Ritter, in 1801
8 billion years ago.
Sagittarius Dwarf, discovered in 1994, mare than 70,000 light years away from earth.
Yes, there was a planet with water discovered. Though it is 2-3 billion light years away and is nearly impossible to reach.
No. This was well before electricity was discovered. Jesus lived 2,000 years ago. Lightbulbs have been around for less than 150 years.
Peppers were discovered about 6,000 years ago.
I doubt it was the same person who did both.
No, a pulsar has not been discovered near the sun. Pulsars are neutron stars that emit beams of radiation that can be detected by astronomers, but they are typically found in distant regions of our galaxy.