“Life without science is meaningless” Trinh Manh Do

Here is the list of frequently asked questions about space science. Some of them have been answered based on many persuasively scientific evidences, which are divided into two groups. They are theoretical arguments and observational evidences. Leave a number of a random question in the comment box below, the best solution will be sent back to you as soon as possibly. You can also ask for the mathematical models related to some particular questions (if further investigation is possible on trinhmanhdo.com)

  1. How old and how old is the universe?
  2. How did the Big Bang happen?
  3. What is dark matter?
  4. How did Galaxies form?
  5. How common are black holes?
  6. How many planets are in the Solar System?
  7. Are we alone?
  8. What is the Fate of the Universe?
  9. What will happen to life on the Earth?
  10. What is dark energy?
  11. Will asteroids threaten life on Earth?
  12. Is water necessary for life?
  13. Is there life on Mars, Titan, or Europa?
  14. Why did Mars dry out?
  15. How did the moon form?
  16. Can light escape from Black Holes?
  17. Where do cosmic rays come from?
  18. Does string theory control the universe?
  19. What creates gravitational waves?
  20. What happens when black holes collide?
  21. Why does anti-matter exist?
  22. Does inflation govern the universe?
  23. Is Pluto considered a planet?
  24. Do multiverses exist?
  25. How did the Milky Way galaxy form?
  26. How did the Solar System form?
  27. How do massive stars explore?
  28. What will happen to the Sun?
  29. Did comets bring life to us?
  30. How did Quasars form?
  31. Do Neutrinos hold secrets of the universe?
  32. How will the universe end?
  33. Is time travel possible inside a black hole?
  34. How many galaxies are there in this universe?
  35. How many stars are there in a typical galaxy?
  36. How many planets are there in a typical star?
  37. What is the Gravitational Lens?
  38. How old is the Earth?
  39. Will the Sun become a black hole after billions of years?
  40. Why can’t black holes be observed by a telescope?
  41. What is Cosmic Microwave Background Information?
  42. How did the inflationary phase happen?
  43. How long did the inflationary phase take?
  44. Why is it very hard to observe the primitive universe?
  45. When was the first galaxy formed?
  46. When was the first star formed?
  47. Is there another universe inside a black hole?
  48. Was it a good idea to send our location to other civilizations?
  49. Do you believe in the Big Bang theory, or Creation?
  50. What facts disprove the Big Bang theory?
  51. What would happen if a large object hit Earth?
  52. Is Earth about to reverse its magnetic field?
  53. Where do the 4 minutes go in a 23h 56minute day?
  54. How old is Earth?
  55. Where does outer space begin?
  56. Will a rogue comet or asteroid hit Earth?
  57. What is a ‘Blue Moon’?
  58. When will NASA develop a nuclear rocket engine?
  59. Which is the nearest planetary system to the Sun?
  60. When will the next galaxy hit the Milky Way?
  61. What happens near the event horizon of a black hole?
  62. Is there such a thing as the Multiverse?
  63. What is the universe expanding into?
  64. What existed before the big bang?
  65. Where does space end?
  66. Where does outer space begin?
  67. What would happen if the magnetic field changed?
  68. When will the next Proxigean Tides arrive?
  69. How many meteors enter the Earth’s atmosphere every day?
  70. What is the South Atlantic Anomaly?
  71. Has the tilt of Earth’s rotation axis ever changed?
  72. Has El Nino really slowed down the rotation of Earth?
  73. Did Earth spin faster in the past?
  74. How did life begin on Earth?
  75. What distances from the sun are compatible with life?
  76. Has anyone ever been hit by a meteor?
  77. What would you do if an asteroid was about to impact?
  78. Where did all that nitrogen come from in Earth’s atmosphere?
  79. When will the next Ice Age arrive?
  80. Does the Moon have an atmosphere?
  81. Is there a name for the second New Moon in a month?
  82. Is the Moon moving away from Earth?
  83. What would have happened if Earth didn’t have the Moon?
  84. Can we see the things left behind by the astronauts?
  85. Why does the Moon seem bigger on the horizon?
  86. When is a Full Moon on Halloween or Christmas?
  87. Does the Full Moon have any effect on humans?
  88. Have any new lunar craters been seen recently?
  89. How is the temperature of the Sun measured?
  90. How much energy does the Sun produce in one hour?
  91. Why is the Sun’s corona hotter than its surface?
  92. How long does it take light to get out from the inside of the Sun?
  93. How was the Sun formed?
  94. Has the loss of mass by the Sun affected planetary orbits?
  95. What are solar storms and how do they affect Earth?
  96. Why do sunspots vary in an 11 year cycle?
  97. How do we know what the inside of the Sun is like?
  98. Is the Sun a member of a binary star system?
  99. How far is the Sun from the center of the Milky Way?
    1. How many stars are there like the Sun?
    2. How will the Sun change in the next 10 billion years?
    3. Will Neptune and Pluto ever collide?
    4. What is the evidence for water on Mars?
    5. Do the giant planets like Jupiter have solid surfaces?
    6. Which planet is hottest, Venus or Mercury?
    7. How long would a trip to Mars take?
    8. What is the typical temperature on Mars?
    9. Are their ice caps on Mercury?
    10. Why does Venus rotate backwards?
    11. Did the Mars Meteorite prove there is life on Mars?
    12. What is the surface of Titan like?
    13. How thick are Saturn’s rings?
    14. What is Pluto like?
    15. Will an asteroid hit Earth in the next few years?
    16. How fast do asteroids and comets rotate?
    17. Can a planet ever explode?
    18. How far does the solar system extend from the Sun?
    19. Did the asteroid belt come from a planet that blew up?
    20. Have any new planets been discovered in our solar system?
    21. Is our solar system typical of other systems?
    22. Are there size limits to stars and black holes?
    23. How big is Proxima Centauri?
    24. Can we see individual stars that are outside our galaxy?
    25. Can you see stars from the bottom of a well in daytime?
    26. How long is the average life of a star?
    27. What is the farthest star we know about?
    28. What happens to a star about to go supernova?
    29. Why aren’t there any green stars?
    30. What exoplanet do we know most about?
    31. What are the atmospheres of planets orbiting other stars like?
    32. How can we possibly know how old a star really is?
    33. What is the largest star astronomers know about?
    34. What is the latest tally of known extra-solar planets?
    35. Can the Hubble Telescope see planets orbiting other stars?
    36. What is the most recent story about the Star of Bethlehem?
    37. Would a nebula look colorful if you traveled into it?
    38. When we see stars, have they already burned up?
    39. What would happen if Betelgeuse went supernova?
    40. Where did all the heavy elements come from?
    41. Which civilizations never paid attention to stars?
    42. Have we ever seen two stars eat each other?
    43. Where would the Sun appear to be in the sky?
    44. How many stars are there?
    45. How did astronomers discover how stars were formed?
    46. Where in the universe did the Big Bang happen?
    47. How do we know the Milky Way is a spiral galaxy?
    48. What is the Local Bubble?
    49. Do galaxies evolve?
    50. What is the farthest object we know about in the universe?
    51. What is a gamma ray burst?
    52. What makes MOND theory so interesting?
    53. What is quantum cosmology?
    54. Did the Big Bang violate the Conservation of Energy?
    55. Are there any new ideas in cosmological thinking?
    56. Were the laws of physics randomly selected at the Big Bang?
    57. Does the universe really have extra dimensions?
    58. What is the Anthropic Cosmological Principle?
    59. What is Time?
    60. What did people know about the universe in 1850?
    61. How big is the universe compared to the Milky Way?
    62. Where does space end?
    63. How could the universe have been infinite at the Big Bang?
    64. If nothing escapes a black hole, why do they still emit x-rays?
    65. What happens to matter when it falls into a black hole?
    66. Could a black hole absorb enough mass to become a Big Bang?
    67. What is the latest on black holes?
    68. What would you see on a trip into a black hole?
    69. Is there a black hole at the center of the Milky Way?
    70. Where does matter go after it reaches the Singularity?
    71. What predictions of black hole theory are untested?
    72. Why do bodies have gravitational fields?
    73. Does gravity produce gravity?
    74. Why is a gravity the same thing as space-time?
    75. How does a body actually bend space-time?
    76. Is gravity the exchange of gravitons, or the curvature of space?
    77. Is space really quantized?
    78. What is Grand Unification Theory?
    79. What is the Holographic Theory of the Cosmos?
    80. What exactly is a ‘quantum fluctuation’?
    81. Did time exist before the Big Bang?
    82. What will the future of the universe be like?
    83. Have scientists proven that other universes exist?
    84. Why are Higgs Fields so important to astronomy?
    85. Can you give me an example of matter created out of nothing?
    86. Is there really such a thing as Nothingness?
    87. Is there such a thing as hyperspace?
    88. Where did the ‘push’ that started the Big Bang come from?
    89. Can we ever reach speeds more than 100,000 miles per hour?
    90. At what speed does spaceflight become lethal?
    91. How do you actually use Einstein’s equation E = mc-squared?
    92. How long would it take to get to the nearest star?
    93. What would happen to you without a spacesuit?
    94. Does time stop at Absolute Zero?
    95. What material is used to make spacecraft?
    96. Were Newton and Einstein wrong about gravity?
    97. Is NASA working on new rocket technology?
    98. Who invented the light year and the parsec?
    99. How long will it take to get to each of the planets?
    100. Will humans ever travel to the stars?
    101. If we never make it to the stars, what will humanity do instead?

Continue reading “Life without science is meaningless” Trinh Manh Do

“A Grand Design for Dark Matter” – Trinh Manh Do

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Good morning! Today we are going to investigate Dark Energy or generally visible matter, radiation. Even many theoretical models describing dark matter have been persuasively demonstrated, dark matter has not been detected directly, making it become one of the greatest mysteries in our cosmos.

800px-CL0024+17

Dark matter is invisible. Based on the effect of gravitational lensing, a ring of dark matter has been inferred in this image of a galaxy cluster CL0024+17 and has been represented in blue color.

Continue reading “A Grand Design for Dark Matter” – Trinh Manh Do

A homogeneous universe

Why is the universe homogeneous?

In the standard Big Bang theory, when we go back in time, the current distance between any two points in space would decrease significantly. The current light signals between these two would also take a much shorter amount of time to approach the other. This case can be explained based on the gravitational force. If it was a sucking force, the universe expanding rate would theoretically decrease. The opposite however had occurred during the inflationary phase, the gravitational force was a pushing force which increased the expanding rate of the universe exponentially. This phase is described mathematically by a particular equation named Hartle-Hawking.

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Astronomy Simulations

Determining Moon Phases Using Bisectors

The lunar phase or phase of the moon is the shape of the illuminated (sunlit) portion of the Moon as seen by an observer on Earth. The lunar phases change cyclically as the Moon orbits the Earth, according to the changing positions of the Moon and Sun relative to the Earth. The Moon and the Earth are tidally locked, therefore the same lunar surface always faces Earth. This face is variously sunlit depending on the position of the Moon in its orbit. Therefore, the portion of this hemisphere that is visible to an observer on Earth can vary from about 100% (full moon) to 0% (new moon). The lunar terminator is the boundary between the illuminated and darkened hemispheres. Aside from some craters near the lunar poles such as Shoemaker, all parts of the Moon see around 14.77 days of sunlight followed by 14.77 days of “night” (the “dark side” of the Moon is a reference to radio darkness, not visible light darkness).

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