1.392×106 km D, 1.9891×1030 kg M, and 5,778 K
The sun's diameter-its widest measurements-is estimated at 865,400 miles.
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.
The sun is far from the center of the Milky Way.
we measure the distance between satellites with the help of relative measurements using different techniques.
Pietro Biadigo has written: 'Meridiano infallibile' -- subject(s): Sun, Time measurements
This observation infers that the Sun is spinning on its own axis
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.
As with all measurements, it's relative. 95 degrees is a hot day, but not nearly as hot as the surface of the sun.