lunar eclipse and solar eclipse
Either a Solar Eclipse- (Sun-Moon-Earth) or a Lunar Eclipse- (Sun-Earth-Moon). These are both straight lines.
Sun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Earth . . Moon with the Earth in the 'middle', so the moon can be in the Earth's shadow.
It is called an eclipse.
They look at the lines on the sun and measure how far it is away from earth and then they tell the temp.
The element "Helium" was unknown on Earth when it was discovered by spectral lines from the Sun. It was later discovered here on Earth, in Texas natural gas deposits.
The conditions on Earth for the equinox to occur must include the following: when the tilt of the Earth's axis is neither pointed towards the Sun or away from the Sun, and the center of the Sun lines up exactly with the Earth's equator.
Because time is based on the Earth's rotation which is from west to east, so that the Sun appears to move from east to west. Latitude lines run around the Earth east and west, so the sun doesn't cross them as it does longitude lines.
An eclipse occurs. When the moon lines up between the Earth and the sun, it casts a shadow onto the Earth's surface, causing a solar eclipse. When the Earth lines up between the moon and the sun, it casts a shadow onto the moon, causing a lunar eclipse.
The phases of the moon are dependant on the relative positions of the sun, moon and earth. It's the angle between the view-lines to the sun and the moon, with you at the vertex of the angle. The phase of the moon you see depends on how much of the sunlit side of the moon faces earth.
It is the varying position of a constellation over a period of weeks.
Two spheres cannot be parallel - only lines can be parallel.
Sun Aire Lines was created in 1968.