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