1.392×106 km D, 1.9891×1030 kg M, and 5,778 K
Astronomical units. (It's 1 from the earth to the sun)
David H. Hathaway has written: 'Doppler measurements of the Sun's meridional flow' -- subject(s): Solar activity, Measurements, Active regions
The basis for a calendar.
It could be a main sequence star.
we measure the distance between satellites with the help of relative measurements using different techniques.
The sun is far from the center of the Milky Way.
Because when the Moon is at a "Quarter Phase", exactly half of the Moon's face is lit by the Sun. That means the Sun-Moon-Earth angle is 90 degrees. He could use that fact to estimate the Moon's distance by geometry.
Pietro Biadigo has written: 'Meridiano infallibile' -- subject(s): Sun, Time measurements
Photo evidence from the Hubble Telescope (and various rockets). Before, that periodicity measurements were used (e.g. seasons,, as one example, as well as the precession of the planets)>
The Sun is ENORMOUS compared to other objects in the solar system! It is so massive that is accounts for 99.9% of all of the matter in the solar system. In fact, the Sun is so big that if it were hollow, you could fit over one million Earth's inside of it! The way that the Sun's diameter is measured is by first taking a ngular diameter measurements and then translating them to linear diameter measurements. The angular diameter of the Sun, or more precisely of the photosphere, can be measured by using telescopes especially during total solar eclipses or by timing Mercury when it is in transit in front of the Sun. The first series of measurements were taken in the early 1700's by Jean Picard in Paris, France.
Measurements to appreciate climate: temperature, volume of precipitations, atmospheric pressure, speed of winds, humidity, numbers of days with sun etc.
The average distance from the Earth to the Sun, known as an astronomical unit (AU), is approximately 93 million miles (about 150 million kilometers). This distance can be calculated using methods such as parallax measurements, radar reflections from planets, or observing the transit of Venus across the Sun. Historically, the distance was first estimated using observations of planetary motion and geometry. Modern techniques involve precise measurements using satellites and telescopes.