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Many astronomers use a common method known as terenateral. This is when they record the height of the corona on the star and use a unit of measurment known as hypengeroly.
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How is stars brightness measured from earth?
Astronomers use a special term to talk about the brightness of stars. The term is "magnitude". The magnitude scale was invented by the ancient Greeksaround 150 B.C. The Greeks put the stars they could see into six groups. They put the brightest stars into group 1, and called them magnitude 1 stars. Stars that they could barely see were put into group 6. So, in the magnitude scale, bright stars have lower numbers.
What do astronomers use to measure stars?
Their eyes, Refracting Telescopes (ones with class lenses) Reflecting Telescopes (ones with mirrors) Radio Telescopes Imaging computer chips in conjunction with telescopes Space based telescopes Underground telescopes (to detect high energy or exotic particles from stars) Gravity wave detectors
What is a stars brightness known as?
A star's brightness is known as its magnitude. Stars with lower magnitude numbers are brighter than stars with a higher magnitude number.
Who studies the stars moons and planets?
Astronomers.
What do astronomers believe are 'born' in nebulae?
Stars.
What are the different ways astronomers use to study stars?
the astronomers use Absolute magnitude
How do astronomers label some stars within constellations?
Astronomers label the stars within constellations according to apparent magnitude.
Who is the greek astronomers who set up a system for measuring the magnitude stars?
galileo
How are stars brightness compared to each other?
Astronomers use the term magnitude to compare the brightnesses of stars. Really bright stars are 1st magnitude while the faintest we can see with the naked eye are about magnitude 6. A 12 inch telescope can see down to about magnitude 14 or 15. Hubble Space Telescope can see down to about magnitude 27.
How is stars brightness measured from earth?
Astronomers use a special term to talk about the brightness of stars. The term is "magnitude". The magnitude scale was invented by the ancient Greeksaround 150 B.C. The Greeks put the stars they could see into six groups. They put the brightest stars into group 1, and called them magnitude 1 stars. Stars that they could barely see were put into group 6. So, in the magnitude scale, bright stars have lower numbers.
How does the sun compare to other stars in terms of surface temperature apparent absolute magnatuide and size?
Temperatures in the sun's middle atmosphere, the Chromosphere are 4,225°C to 6,000°C. In the sun's outer atmosphere, or Corona, temperatures may reach 2,000,000°C, while stars are related to colour: Stars that have the lowest surface temperatures (below 3,500 °C)are red. Stars that have the highest surface temperatures (above 25,000 °C) are blue. The Apparent Magnitude of the sun is less than the other stars. Some stars are actually more luminous, or brighter than the sun is. If these stars are located far from Earth, they may not appear bright to us. Using only their eyes, ancient astronomers described star brightness by magnitude. They called the brightest stars they could see 'first magnitude' and the faintest stars they could see 'sixth magnitude'. Astronomers using telescopes see many stars that are too dim to see through the naked eye. Rather than replacing the magnitude system, astronomers added to it. Today, the brightest stars have a magnitude of about -2. The faintest stars that we can see through a telescope have a magnitude of +30. Sirius the brightest star in the night sky has an apparent magnitude of -1.46. To the naked eye, the sun has apparent magnitude of -26.8, even though it is not as luminous a star as Sirius is. The sun is simply located closer to Earth. The apparent magnitude of the sun is -26.8. However the absolute magnitude of the sun is +4.8 which is typical of many stars. Now compare the sun, which is located 8.3 light minutes from Earth, to Sirius, which is located 8.6 light years from Earth. Sirius has an apparent magnitude of -1.46 and an absolute magnitude of +1.4. Therefore, Sirius is much more luminous than the sun is.
What does astronomers?
Stars...
What is the apparent brightness of the stars?
Astronomers define star brightness in terms of apparent magnitude how bright the star appears from Earth and absolute magnitude how bright the star appears at a standard distance of 32.6 light-years, or 10 parsecs.
Who classifies stars?
Astronomers classify stars.
What do astronomers use to measure stars?
Their eyes, Refracting Telescopes (ones with class lenses) Reflecting Telescopes (ones with mirrors) Radio Telescopes Imaging computer chips in conjunction with telescopes Space based telescopes Underground telescopes (to detect high energy or exotic particles from stars) Gravity wave detectors
What is a stars brightness known as?
A star's brightness is known as its magnitude. Stars with lower magnitude numbers are brighter than stars with a higher magnitude number.
What are the three brightnesses of the stars?
I think you are referring to what astronomers call magnitude, which is defined in several different ways. Apparent magnitude is how bright a star looks compared to others. The dimmest stars we can see with the naked eye in good conditions are magnitude 6, and the brightest ones are about 1. Really bright objects like some of the planets have negative magnitude. Absolute magnitude is a way to compare how bright stars really are, because the apparent magnitude is affected by their distance from us. It's the magnitude the star would have if it were exactly ten parsecs away. Bolometric magnitude is more complex, but is an attempt to quantify the star's luminosity over all wavelengths, not just those we can see.
