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The gas that might look to see if there is life in other planets. |
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That is how long it would take to send a radio message to the Andromeda Galaxy and receive a reply. |
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That is how long it would take to travel to the star, Alpha Centauri, at a rate of 10 astronomical units per year. |
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| Yes, can't go faster then speed of light, reaching it take infinite energy |
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Is there a limit on how fast a rocket ship can travel? |
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What is the age of the oldest of the Bristlecone Pine Trees in the White Mountains of California? |
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| kept warm by tidal heating |
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What might cause liquid water oceans beneath the ice crust of Jupiter's moon Europa? |
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How far into space have radio transmissions from the earth gone? |
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How many stars are there in the Milky Way galaxy? |
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How many galaxies are there in the observable universe? |
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3 to 7 * 10 ^22 stars
Between 30 and 70 sextillion stars |
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| How many stars are there in the observale universe? |
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| Direct observation, Astrometry (look for the tiniest of variations in movement), Doppler shift, etc. |
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| How are planets planets in orbit around nearby stars detected? |
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| Hydrogen (1), Helium(2), Lithium(3), Beryllium(4), Boron(5), Carbon(6), Nitrogen(7), and Oxygen(0)... |
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Name the first eight elements. How many protons in each nucleus? |
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It is easier to send a radio transmission or a spaceship to a nearby star? |
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