Betelgeuse is located on the shoulder of the Orion constellation and is one of the brightest stars in the sky. It is classified as a supernova and is predicted to explode within the next million years. Because it is 640 light years away, Betelgeuse is too far for its eventual explosion to cause any damage to Earth.Know More
The size of Betelgeuse fluctuates from 700 to 1,000 times the size of the sun. It has a surface temperature of 6,000 degrees Fahrenheit and is classified as a red giant. Red giants have used up all the hydrogen in their cores, turning it into helium. The helium makes the star larger, brighter and cooler. The red color is due to its lower temperature compared to other stars.
The red giant is the last phase before a star becomes a supernova. Becoming a supernova signals the end of a star's life. Stars progress through their life cycles at different rates, with heavier stars reaching the red giant phase more quickly than lighter stars. Betelgeuse reached the red giant phase at the age of 7 million years. The Earth's sun will not reach this phase until it is 10 billion years old. Larger stars become black holes after the explosion of the supernova.Learn more about Astronomy
Four layers of the earth's atmosphere containing various gases make up the composition of the sky. The layers of the atmosphere are divided into the troposphere, the stratosphere, the mesosphere and the thermosphere. The atmosphere's divisions occur according to temperature fluctuations.Full Answer >
The sky ends at the Karman line, which is located at about 67 miles above sea level. Above this line, space begins. However, technically, the sky does not end so much as the atmosphere, or sky, thins until there is no oxygen left.Full Answer >
The planet Venus is the brightest object in the western sky. At its brightest, Venus is almost 10 times brighter than Jupiter, the sky's second brightest object.Full Answer >
Astra 28.2°E is the name for the collection of Astra communications satellites co-located at the 28.2° East position in the Clarke Belt that are maintained and controlled by the Société Européenne des Satellites, based in Betzdorf, Luxembourg. It is one of the chief television satellite positions serving Europe.Full Answer >