Rotating Question Curious About Astronomy? Ask an Astronomer

Previously answered questions by Karen Masters

(in order of times viewed)

  1. What's going to happen on December 21st 2012?
  2. What is a white hole?
  3. What is the largest star?
  4. How does the position of Moonrise and Moonset change?
  5. Why is a day divided into 24 hours?
  6. What would happen if we did not have a Moon?
  7. How many Earths fit into the Sun?
  8. Why do airplanes take longer to fly West than East?
  9. How can I find the star I have "bought"?
  10. Is Pluto a planet?
  11. How much money is spent on space exploration?
  12. Does your weight change between the poles and the equator?
  13. Why are there both high and low tides?
  14. Is the Sun expanding? Will it ever explode?
  15. What is the largest galaxy?
  16. How many known galaxies are there?
  17. What are the advantages and disadvantages of using a telescope in space?
  18. What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle?
  19. How do stars move in the Galaxy?
  20. How much money do astronomers make?
  21. What will happen to life on Earth when the Sun becomes a red giant?
  22. What was there before the Big Bang and what is there outside of our universe?
  23. When is the next comet due to arrive?
  24. What would happen if the gravity on Earth was suddenly turned off?
  25. Does the Sun move around the Milky Way?
  26. What are the requirements for being a planet?
  27. Why does the Earth tilt back and forward once a year?
  28. Where does the name "Milky Way" come from?
  29. How are black holes made? Could one be made close to us?
  30. How do rockets move in space?
  31. What is the evidence supporting the nebula theory of Solar System formation?
  32. Does the Mediterranean sea have tides?
  33. Who has landed on the moon?
  34. What would you see from inside a black hole?
  35. How often does the Sun pass through a spiral arm in the Milky Way?
  36. How is astronomy impacted by trigonometry?
  37. What are the "dog days of summer"?
  38. Does quantum entanglement imply faster than light communication?
  39. If the universe is infinite does that mean there is an infinite number of "me"s?
  40. Where does the name "Moon" come from?
  41. How did the stars get named?
  42. What are black holes made of?
  43. Why is looking out into space the same as looking back in time?
  44. Where, in relation to the entire universe, is the Milky Way located?
  45. When can I see the Moon through the hole in the Pantheon?
  46. What is the origin of spiral structure in galaxies?
  47. How close was the Moon to the Earth when it formed?
  48. How do the astronauts communicate in space if sound cannot travel in a vacuum?
  49. Can any galaxies be seen with the naked eye?
  50. How long does the supernova stage of a star last?
  51. Why isn't the summer solstice the hottest day of the year?
  52. Which constellation does our Sun belong to?
  53. How can I find the distance to the Sun on any given day?
  54. Are there any asteroids on a collision course with Earth?
  55. Would your weight change as you go underground?
  56. How is the time of sunrise calculated?
  57. Why does the Moon look big on the horizon?
  58. Why are there stars?
  59. Is the Earth slowly getting larger?
  60. Are Kuiper Belt Objects asteroids? Are large Kuiper Belt Objects planets?
  61. How do galaxies collide in an expanding universe?
  62. Where is the nearest black hole?
  63. How much can the location of sunset differ from due West?
  64. How does Astronomy involve Chemistry?
  65. What is the best way to see the Milky Way?
  66. How would the weather on Earth be different if it were a cube?
  67. Was the Sun made in a supernova?
  68. Why do people draw stars with five points?
  69. Can I buy land on the Moon?
  70. Is the Moon hollow?
  71. What is the most distant known galaxy?
  72. Does the Sun have an iron surface?
  73. How many Astronauts have been in space?
  74. Can a person go into a black hole and come out alive?
  75. What is the typical size of a visible shooting star?
  76. Does Mt. Everest cast a shadow on the moon?
  77. How can the universe be "flat"? We're 3D!
  78. How does night and day work?
  79. What is the speed of gravity?
  80. What is Earthrise over the Moon?
  81. Is there really a 10th planet?
  82. What would happen to the Earth if an asteroid hit the Moon?
  83. How many stars can I see?
  84. How can I find my age on another planet?
  85. Can a lunar and a solar eclipse happen in the same month? When will this happen next?
  86. How hot is each one of the layers of the sun?
  87. Who came up with the name "black hole"?
  88. How can we estimate the number of Earth-like planets in the Galaxy?
  89. What would happen if two stars collided?
  90. Why don't astronomers use everyday units to measure distances (what is an AU or a pc)?
  91. What are quasars made of?
  92. What is dark matter?
  93. Did the speed of light change over the history of the universe?
  94. How can we know that there are other galaxies if we cannot leave ours?
  95. Is there any limitation to what a black hole can "suck" in?
  96. Why do we study black holes?
  97. What are the closest and/or brightest stars?
  98. Did I see the Aurora Borealis as a child?
  99. What are the facts about the Star of Bethlehem?
  100. Wouldn't the Big Bang theory be considered a hypothesis and not a theory?
  101. Could you tell me about the life cycle of galaxies?
  102. Could an astronaut or satellite fall into a black hole that we didn't know about?
  103. Was I hit by a meteorite?
  104. How are galaxies named?
  105. How do I explain to my children why the Moon has phases?
  106. How will the two black holes that are going to collide affect Earth?
  107. Is there a project I can do on black holes?
  108. What supernova created the Crab nebula?
  109. Can "tired light theory" explain the observed redshifts of galaxies?
  110. Is infinite temperature possible?
  111. Do we know everything about the Sun?
  112. What type of energy does a black hole have?
  113. Why is the shadow on the Moon the shape it is?
  114. How different would the night sky have looked in 40,000 B.C.?
  115. What happens to the material that has been sucked into a black hole?
  116. If we invented special suits could we ever go to the sun?
  117. What is the difference between homogeneity and isotropy?
  118. What happened to the girl who named Pluto?
  119. How many sunspots can the Sun have at once?
  120. Was Stonehenge built to mark solar phenomena?
  121. Can any comparison be made between spiral galaxies and hurricanes?
  122. Why are telescopes kept in cold conditions?
  123. What's so exciting about the new planet around 55 Cancri?
  124. As the universe expands, why don't galaxies get stretched out?
  125. Why can't relative velocities add up to more than the speed of light?
  126. Why is the Hubble Space Telescope in space?
  127. Do galaxies orbit around anything?
  128. How do I become an astronomical artist?
  129. How are astronomy and poetry linked?
  130. What class of spiral galaxy is the Milky Way?
  131. Could we send a manned mission to the outer planets?
  132. Will we discover an 11th planet? What would it be called?
  133. What month was it when Odysseus saw Orion in 1000BC?
  134. What is the solar cycle?
  135. How are supernovae discovered?
  136. Do constellations looks the same from space?
  137. Could photons be dark matter?
  138. What's new with the Big Bang?
  139. Why can we have solar eclipses?
  140. Where can I find information on the moons of other planets?
  141. Did the Sumerians measure precession?
  142. Why don't astronauts sublimate in space?
  143. How do bars form in spiral galaxies?
  144. How do astronomers come up with their facts?
  145. Where can I see Newton's original reflecting telescope?
  146. How do you classify galaxies?
  147. How does interferometry work?
  148. How do we find out about the star formation histories of galaxies?
  149. How can I watch the Perseid meteor shower?
  150. Is cosmic expansion happening on microscopic scales?
  151. How can I find out if the new moon has been sighted?
  152. Is it a coincidence that we can have total solar eclipses? Are there other planets which also have them?
  153. Is light blueshifted when it is gravitationally lensed?
  154. Why was Mir burnt up in the atmosphere?
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