1990-1780b.C.
A long Time ago
A long Time ago
Both new planets and stars are being formed. Scientists are actually watching the formation of planets and keeping track of which ones would be able to support life.
The Babylonians gained their information of astronomy by keeping detailed records of 30 stars as reference points for stars, the Moon, and planets. Apart from the astrolobe for measuring azimuth, , all astronomical observations were taken with the naked eye. The earth's rotation gave sidereal time, the length of a day was from noon to noon, and the sundial, waterclock [or clepsydra], and hourglass were used for measuring smaller periods of time.
Planets orbit stars.
Tycho Brahe
stars, the planets have to get heat from stars
Planets do not technically need their respective stars, but stars keep planets in orbit and provide heat and light to the planets.
On the contrary! A star has planets, which circulate it. And planets have moons. Stars do not circle planets.
They were curious about what they saw, and the techniques they developed led eventually to the development of science.
The Babylonians in about 700 BC used numbers to describe angles, and divided a circle into 360 equal degrees for that purpose, then angles were described in degrees. Using that they were able to record the positions of stars.
Planets and stars have gravity.