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The time it takes for light to travel from the Moon to Earth is approximately 1.28 seconds. This is based on the average distance between the Earth and the Moon, which is about 384,400 kilometers (238,855 miles). Since light travels at a speed of about 299,792 kilometers per second (186,282 miles per second), the short duration reflects the vast distances in space.

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What is the star type of Deneb?

Deneb is classified as a spectral type A2 Ia, indicating that it is a supergiant star. It is one of the brightest stars in the night sky and is part of the constellation Cygnus. Deneb is notable for its high luminosity and large size, being around 60,000 times more luminous than the Sun. Its distance from Earth is approximately 1,425 light-years.


How you would classify the star Deneb?

Deneb is classified as a spectral type A2 Ia, indicating that it is a supergiant star. It is one of the brightest stars in the night sky and is part of the constellation Cygnus. Deneb is a massive, luminous star that has exhausted the hydrogen in its core and is in the later stages of its stellar evolution. Its distance from Earth is approximately 1,425 light-years, making it a key part of the Summer Triangle asterism.


How big is the star deneb?

Deneb, a prominent star in the constellation Cygnus, is approximately 200,000 times more luminous than the Sun and has an estimated radius around 19 times greater than that of the Sun. It is classified as a supergiant star, specifically a spectral type A2 Ia, and is located about 1,425 light-years away from Earth. Due to its immense size and brightness, Deneb is one of the most luminous stars visible in the night sky.


What is used to measure a stars distance if it can not be measured by parallax?

A million light-years is about 300,000 parsecs; that would mean a parallax of 1/300,000 arc-seconds. Such a small angle can't be measured yet.A million light-years is about 300,000 parsecs; that would mean a parallax of 1/300,000 arc-seconds. Such a small angle can't be measured yet.A million light-years is about 300,000 parsecs; that would mean a parallax of 1/300,000 arc-seconds. Such a small angle can't be measured yet.A million light-years is about 300,000 parsecs; that would mean a parallax of 1/300,000 arc-seconds. Such a small angle can't be measured yet.


What is the name of the first mission established?

What ia the name of the first mission established