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All three in a straight line, with the Moon between the Earth and the Sun.
Saturn is 9 AU from the Sun, or 8-10 AU from the Earth, depending on the relative positions in the two orbits.
They are at 'right-angles', with the Earth at the corner of the right angle.
A year here on planet Earth is 365 and a quarter days long. A "relative length of year" can only be given by comparison with some other object's year. Since we live on the Earth, we usually compare the years of other planets to that of Earth, rather than the other way around. So the year of Mars is 1.88 Earth years and that of Venus is 0.615 Earth years. The year of Earth is 1.000 Earth years.
During a lunar eclipse, the Earth is between the sun and the moon; the shadow of Earth darkens the moon. During a solar eclipse, the moon is between Earth and the sun; the moon blocks the sun.
All three in a straight line, with the Moon between the Earth and the Sun.
Shadows are all about the Earth's rotation. As the Earth rotates throughout the day, the relative positions of the sun and Earth change. The sun is the primary light source for shadows, and if the light source is changing positions (this is relative to earth), then the shadows will change.
Because of the relative positions of the earth, sun and moon.
They form a right-angled triangle with the Moon at the right-angle. The Moon is approximately in the direction that the Earth is headed in, in its orbit round the Sun.
In a line. Sun, Moon, Earth or Sun, Earth, Moon
The Big Dipper does not change positions, Earth moves relative to the Big Dipper all the time.
The moon's phases result from the changing relative positions of the Earth, Moon, and Sun. It doesn't matter where the moon is when it's half-lit (or in its first quarter); its position relative to Earth and the Sun does matter, however. When the Sun and Moon are aligned on the same side of the Earth the Moon is "new", and the side of the Moon visible from Earth is not illuminated by the Sun. As the Moon waxes (the amount of illuminated surface as seen from Earth is increasing), the lunar phases progress from new moon, crescent moon, first-quarter moon, gibbous moon and full moon phases, before returning through the gibbous moon, third-quarter (or last quarter) moon, crescent moon and new moon phases.
Because its position in the sky relative to Earth and the Sun means that the face pointing to Earth is unlit. As the month progresses the relative positions change and more and more of the face we see is lit, so it starts off as a small crescent and gradually gets bigger.
the relative positions of Earth,moon,and sun(the phases of the moon)
No, it has nothing to do with the shape of the Earth. Phases of the Moon are caused by the relative positions of the Sun, the Earth and the Moon. When seen through a telescope, Venus presents similar phases. However, the circular shape of Earth's shadow that is projected on the Moon' surface during a lunar eclipse is evidence that the Earth is round.
Saturn is 9 AU from the Sun, or 8-10 AU from the Earth, depending on the relative positions in the two orbits.
Phases, a phase depends on how much of the sunlit side of the moon faces.