By Neil de Grasse Tyson
Merlin, a fictional customer from the Andromeda Galaxy, Planet Omniscia, has been associates with a number of the most crucial clinical figures of the previous together with Kepler, da Vinci, Magellan, Doppler, Einstein and Hubble. during this pleasant journey of the galaxies, Merlin frequently recounts his conversations with those old figures in his responses to well known astronomy questions requested via adults and youngsters alike. Merlin's well-informed solutions mix a distinct mix of wit and poetry besides severe technology defined in refreshingly transparent, reader-friendly language.
Dear Merlin: Can someone pass our galaxy in a spaceship in the course of one human lifespan?
Merlin: In 1905, Merlin's buddy Albert Einstein brought the "Special conception of Relativity," which predicts that point will tick slower and slower the speedier you go back and forth. have been you to embark on such an experience you'll conceivably age as low as you would like, based in fact, in your particular velocity. The...
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Extra resources for Merlin's Tour of the Universe
Dear Merlin, I recently read that Saturn’s rings disappear when viewed edge-on from Earth. Why is this so? RALPH CARRERA BRONX, NEW YORK Saturn’s rings are estimated to be only a few dozen miles thick. When viewed edge-on at Saturn’s enormous distance it is no surprise that they seem to disappear. It is like detecting a dime at a distance of four hundred miles. ” Dear Merlin, I understand that occasionally Neptune is the farthest planet in the solar system. When will Pluto regain that distinction?
It is like detecting a dime at a distance of four hundred miles. ” Dear Merlin, I understand that occasionally Neptune is the farthest planet in the solar system. When will Pluto regain that distinction? M. EST on February 10, 1999. Pluto’s average distance from the Sun is greater than that of Neptune. Pluto’s flattened orbit, however, brings it closer to the Sun for twenty years out of its 248-year orbital period. Dear Merlin, What is Pluto: a planet, planetoid, or comet? How will it be determined if Pluto should be demoted to asteroid status?
If meteors were visible for longer than the one or two seconds it takes them to burn up in the atmosphere then maybe meteors would have names as well. Dear Merlin, How many asteroids are there? What are their names? Are there more asteroids than planets? ARNOLD GREEN TUCSON, ARIZONA There are hundreds of thousands of asteroids in and around the asteroid belt. But newly discovered asteroids are catalogued only if their orbits can be computed accurately. The last Merlin checked, the number of named asteroids was rising through five thousand, while there remained only nine named planets.