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The Sun has a diameter of about 1.39 million kilometers (approximately 864,000 miles), making it about 109 times wider than Earth. Its mass is approximately 1.99 x 10^30 kilograms, which accounts for about 99.86% of the total mass of the Solar System. The surface temperature is around 5,500 degrees Celsius (9,932 degrees Fahrenheit), while the core reaches temperatures of about 15 million degrees Celsius (27 million degrees Fahrenheit). The Sun's luminosity, or total energy output, is about 3.828 x 10^26 watts.
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Why did Aristarchus make his measurements of the Sun's distance at the time of quarter moon?
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.
Is the sun hollow?
No, the sun is not hollow. It is a massive sphere composed primarily of hydrogen and helium gas undergoing nuclear fusion at its core. Its density and structure are well understood by scientists through various observations and measurements.
How do you measure the radius of sun?
The radius of the Sun is typically measured using observations of its shape and size. Scientists use various methods such as helioseismology (studying solar oscillations) and analyzing solar phenomena like sunspots and solar flares to estimate the Sun's radius. These measurements help determine the Sun's physical size and structure.
How big was the sun?
The sun is a massive star, approximately 1.4 million kilometers in diameter, which is about 109 times larger than Earth. Its size allows it to produce energy through nuclear fusion and provides light and warmth to our solar system.
Scientists estimate the central temperature of the Sun using?
Scientists estimate the central temperature of the Sun using models that consider the balance between the Sun's gravitational contraction and nuclear fusion processes happening in its core. They use this information, along with measurements of the Sun's energy output and properties, to calculate a central temperature in the range of about 15 million degrees Celsius.
What unit of measurements do you use for the distance between sun and earth?
Astronomical units. (It's 1 from the earth to the sun)
What has the author David H Hathaway written?
David H. Hathaway has written: 'Doppler measurements of the Sun's meridional flow' -- subject(s): Solar activity, Measurements, Active regions
What are the measurements of the sun?
1.392×106 km D, 1.9891×1030 kg M, and 5,778 K
How is the Greek development system of measurement using sun measurements important to ancient civilization?
The basis for a calendar.
Measurements indicate that a certain star has a very high luminosity 100000 times your sun but yet has a temperature that is cooler than the sun?
It could be a main sequence star.
What main conclusion did Shapley draw from his measurements of the distances to the globular clusters?
The sun is far from the center of the Milky Way.
How do you get the distance of a planet from the sun?
we measure the distance between satellites with the help of relative measurements using different techniques.
What has the author Pietro Biadigo written?
Pietro Biadigo has written: 'Meridiano infallibile' -- subject(s): Sun, Time measurements
Why did Aristarchus make his measurements of the Sun's distance at the time of quarter moon?
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.
What is the evidence that the sun revolves around the sun.?
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)>
What is the diameter of the Sun from pole to pole?
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.
What do you measure climate with?
Measurements to appreciate climate: temperature, volume of precipitations, atmospheric pressure, speed of winds, humidity, numbers of days with sun etc.
