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B I A Stargazing Insights
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  1. 1oldman2
    Featured

    B Space Stuff and Launch Info

    ... 26 27 28
    Feb 6, 2019
    555
    38,309
    Replies: 555
    436
  1. hagopbul

    B About the current Rover mission

    Feb 14, 2019 at 8:39 PM
    11
    1,781
    Replies: 11
    10
  2. sophiecentaur

    B Any new news from Parker?

    ... 2
    Feb 12, 2019 at 2:23 PM
    23
    2,911
    Replies: 23
    2
  3. SNOUSSI Anis

    B How hard is it to track moon cycles

    ... 2
    Feb 9, 2019
    28
    2,004
    Replies: 28
    22
  4. Wallsy

    B The unusual motion of stars in galaxies

    Feb 6, 2019
    6
    903
    Replies: 6
    3
  5. simbiote3

    B What are these bright spots in this zoomable image of the Milky Way?

    Feb 6, 2019
    14
    1,575
    Replies: 14
    10
  6. Daniel Dimov

    B Galaxy rotational curves vs time

    Jan 29, 2019
    9
    1,229
    Replies: 9
    3
  7. Simon Peach

    B The age of the Milky Way galaxy

    Jan 29, 2019
    12
    2,100
    Replies: 12
    11
  8. StarTrekkin

    B Is Dark Energy really the best term?

    Jan 28, 2019
    7
    982
    Replies: 7
    10
  9. kechloo

    B Basic questions about astronomy

    Jan 26, 2019
    5
    1,077
    Replies: 5
    8
  10. PaulCam

    B Exoplanets - Suspicious evidence and fantastical conclusions

    ... 2
    Jan 24, 2019
    21
    2,674
    Replies: 21
    17
  11. swampwiz

    B Why didn't the Moon go fully red for this eclipse?

    Jan 22, 2019
    8
    1,258
    Replies: 8
    8
  12. Sarthak1221

    B Expansion of the universe

    Jan 22, 2019
    3
    671
    Replies: 3
    3
  13. wolram

    B A second galaxy with no dark matter

    Jan 21, 2019
    2
    805
    Replies: 2
    0
  14. Demigod

    B Hyperloop - Orbital Space Launch

    ... 2
    Jan 19, 2019
    28
    2,890
    Replies: 28
    4
  15. zuz

    B Earth from space

    Jan 19, 2019
    2
    772
    Replies: 2
    9
  16. AZFIREBALL

    B What would it be like on Earth if it were not a sphere?

    ... 2
    Jan 19, 2019
    32
    2,732
    Replies: 32
    17
  17. .Scott

    B Oumuamua remains a puzzle

    Jan 16, 2019
    6
    1,381
    Replies: 6
    5
  18. glappkaeft

    B The Hubble WFC3 instrument has stopped working

    Jan 16, 2019
    2
    952
    Replies: 2
    3
  19. TEFLing

    B Solidification of white dwarves

    Jan 13, 2019
    1
    625
    Replies: 1
    2
  20. Michaela SJ

    B Further collapse of Neutron Stars

    Jan 9, 2019
    4
    612
    Replies: 4
    0
  21. Glenstr

    B Another Andromeda-Milky Way "collision" question

    Jan 8, 2019
    3
    582
    Replies: 3
    0
  22. Mlesnita Daniel

    B Ideas to protect the Earth from possible asteroid impacts

    ... 2 3
    Jan 7, 2019
    59
    3,719
    Replies: 59
    23
  23. Rebbyte

    B Standard candles in a stretching fabric of space

    Jan 3, 2019
    3
    635
    Replies: 3
    3
  24. Sanborn Chase

    B Meaning of the Abbreviation CCH in Graphic

    Jan 2, 2019
    2
    512
    Replies: 2
    0
  25. TEFLing

    B Q re: Milky Way galaxy arms

    Dec 31, 2018
    10
    1,432
    Replies: 10
    7
  26. JGHunter

    B Influences on flattening

    Dec 31, 2018
    8
    867
    Replies: 8
    3
  27. Kay Marie

    B Water - Where do you think it came from?

    Dec 30, 2018
    5
    804
    Replies: 5
    5
  28. wolram

    B Ninth planet

    Dec 28, 2018
    5
    834
    Replies: 5
    3
  29. zuz

    B Interstellar dust

    Dec 27, 2018
    15
    774
    Replies: 15
    17
  30. fbs7

    B Why most stars seem to rotate the same direction in a galaxy?

    Dec 27, 2018
    6
    653
    Replies: 6
    6
  31. rootone

    B Why doesn't the moon fall down if it's just a big rock?

    Dec 26, 2018
    9
    849
    Replies: 9
    3
  32. Viopia

    B Can we see our past?

    ... 2 3 4
    Dec 25, 2018
    63
    3,707
    Replies: 63
    17
  33. nmsurobert

    B Parallax limitations

    Dec 21, 2018
    4
    615
    Replies: 4
    4
  34. fbs7

    B Does galaxy formation conserve mass and angular momentum?

    ... 2
    Dec 13, 2018
    31
    1,546
    Replies: 31
    2
  35. fbs7

    B Telescope recommendations for watching a galaxy?

    Dec 11, 2018
    17
    811
    Replies: 17
    15
  36. zuz

    B Expanding universe

    Dec 10, 2018
    7
    631
    Replies: 7
    4
  37. DeckSmeck

    B Does everything in space have or inherit inertia?

    ... 2
    Dec 7, 2018
    33
    1,115
    Replies: 33
    0
  38. Jinsuk Kim

    B When light arrives at the end of space, what happens?

    ... 2 3
    Dec 3, 2018
    49
    3,590
    Replies: 49
    19
  39. nmsurobert

    B Velocity of Saturn's rings

    Dec 2, 2018
    3
    486
    Replies: 3
    5
  40. DeckSmeck

    B Interstellar Flight Path

    Dec 2, 2018
    18
    1,179
    Replies: 18
    2
  41. Cerenkov

    B Ratio of Earth-Sized exoplanets to other sizes of exoplanet?

    Dec 1, 2018
    7
    895
    Replies: 7
    5
  42. Imager

    B No low-frequency emission from Fast Radio Bursts

    Nov 26, 2018
    1
    324
    Replies: 1
    2
  43. wolram

    B Does dark matter interact with Baryons?

    Nov 23, 2018
    4
    367
    Replies: 4
    0
  44. Victoria Petrov

    B IB Extended Essay in Astrophysics

    Nov 22, 2018
    4
    413
    Replies: 4
    2
  45. CygnusX-1

    B Barnard's Star, 6 Light-Years Away, May Have Cold SuperEarth

    Nov 21, 2018
    8
    1,022
    Replies: 8
    2
  46. Chris W Kullander

    B Parallel Spacetimes?

    Nov 19, 2018
    5
    417
    Replies: 5
    1
  47. tovisonnenberg

    B Magnetospheric eternally collapsing objects

    Nov 18, 2018
    3
    380
    Replies: 3
    1
  48. Green dwarf

    B Was the universe is infinitely large at the big bang?

    Nov 16, 2018
    11
    644
    Replies: 11
    1
  49. nichos

    B Gravity can't be so strong

    Nov 11, 2018
    14
    1,388
    Replies: 14
    7
  50. Marcus1122

    B When a star exhausted it's nuclear fuel

    ... 2
    Nov 10, 2018
    20
    609
    Replies: 20
    1
  51. Graeme M

    B What does it mean to say that "space" has a temperature?

    Nov 10, 2018
    19
    973
    Replies: 19
    3
  52. nmsurobert

    B Great red spot forward speed

    Nov 4, 2018
    2
    295
    Replies: 2
    2
  53. wolram

    B Picture of the day

    Nov 2, 2018
    2
    286
    Replies: 2
    1
  54. RandomPhysicist

    B Formation of Supermassive Black Holes

    Oct 30, 2018
    3
    430
    Replies: 3
    1
  55. Mlesnita Daniel

    B Why the multiverse makes no sense to me

    Oct 28, 2018
    10
    783
    Replies: 10
    2
  56. fizzy

    B A new "plume" on Mars?

    Oct 28, 2018
    12
    948
    Replies: 12
    2
  57. consuli

    B Rough probability that aliens would visit the Earth?

    ... 2 3
    Oct 27, 2018
    45
    3,242
    Replies: 45
    18
  58. bbbl67

    B Calculating solar irradiance at each planet?

    Oct 27, 2018
    10
    541
    Replies: 10
    4
  59. Aidan345733

    B Fermi Paradox

    Oct 26, 2018
    1
    515
    Replies: 1
    2
  60. unusually_wrong

    B Bose Stars (dark matter in origin)

    Oct 25, 2018
    1
    458
    Replies: 1
    0
  61. Romanko

    B Earth's orbit around the sun -- looking for an equation

    Oct 25, 2018
    6
    554
    Replies: 6
    6
  62. Enniss

    B Can the moon orbit be used as perpetual motion?

    Oct 24, 2018
    5
    484
    Replies: 5
    8
  63. wolram

    B How do planets form?

    Oct 22, 2018
    1
    372
    Replies: 1
    1
  64. Elbraido

    B Modified Newtonian dynamics

    Oct 13, 2018
    3
    521
    Replies: 3
    0
  65. lavinia

    B How much of a star undergoes fusion?

    ... 2
    Oct 9, 2018
    24
    1,644
    Replies: 24
    6
  66. BeedS

    B The Sun's magnetic field

    ... 2
    Oct 1, 2018
    23
    1,637
    Replies: 23
    3
  67. Simon Peach

    B Gravity and neutron stars

    Sep 28, 2018
    6
    641
    Replies: 6
    3
  68. jha192001

    B Black Holes -- What methods to use to find them?

    Sep 28, 2018
    8
    358
    Replies: 8
    4
  69. Brian Muller

    B My telescope's field of view is tiny (about a quarter inch through the focuser w/ 25 mm eyepiece)

    Sep 26, 2018
    7
    474
    Replies: 7
    3
  70. wywong

    B Why don't man-made satellites drift away from the Earth?

    Sep 25, 2018
    17
    1,415
    Replies: 17
    7
  71. nmsurobert

    B Uranus and/or Neptune Lab ideas

    Sep 18, 2018
    11
    685
    Replies: 11
    1
  72. Spinnor

    B Galactic Collision Creates a Ring of Black Holes and Neutron Stars...

    Sep 15, 2018
    1
    773
    Replies: 1
    0
  73. benorin

    B The geometry of the expansion of space

    Sep 15, 2018
    5
    732
    Replies: 5
    4
  74. nmsurobert

    B High school Astro Club

    Sep 14, 2018
    2
    385
    Replies: 2
    4
  75. DonutLord

    B Is right ascension only measured once a year?

    Sep 12, 2018
    6
    628
    Replies: 6
    4
  76. kolleamm

    B The accelerating expansion of the universe

    Sep 4, 2018
    3
    677
    Replies: 3
    3
  77. happyhacker

    B An observer looking at Earth's past history

    Aug 29, 2018
    3
    481
    Replies: 3
    1
  78. tovisonnenberg

    B Brown Dwarfs

    Aug 27, 2018
    5
    449
    Replies: 5
    1
  79. shimun

    B Solar System Moving Speed

    ... 2 3
    Aug 26, 2018
    55
    2,976
    Replies: 55
    25
  80. Edeff

    B Are they still there?

    Aug 24, 2018
    6
    774
    Replies: 6
    7
  81. AGuglielmone

    B Are all wavelengths of light possible?

    Aug 21, 2018
    8
    826
    Replies: 8
    0
  82. nivamani Rajbongshi

    B Space: Color and Resources

    Aug 18, 2018
    5
    365
    Replies: 5
    3
  83. tovisonnenberg

    B Why don't high mass stars expand and cool?

    Aug 13, 2018
    8
    794
    Replies: 8
    1
  84. tovisonnenberg

    B Why will Betelgeuse go supernova?

    Aug 13, 2018
    9
    1,173
    Replies: 9
    2
  85. Delta2

    B Water colour in Mars

    Aug 10, 2018
    7
    702
    Replies: 7
    5
  86. nikkkom

    B Planet Nine race, how is it going?

    Aug 8, 2018
    10
    1,319
    Replies: 10
    4
  87. CygnusX-1

    B Eta Carinae Is Farther Than You Thought: 8,500 Light-Years

    Aug 7, 2018
    1
    387
    Replies: 1
    1
  88. Mikaelochi

    B A Question Concerning Lunar Eclipses and Aristarchus's Work

    Aug 4, 2018
    3
    308
    Replies: 3
    1
  89. tovisonnenberg

    B Neutron star collisions

    Aug 1, 2018
    3
    524
    Replies: 3
    0
  90. gmax137

    B Saturn's Rings Appearance from Saturn?

    Jul 28, 2018
    6
    533
    Replies: 6
    7
  91. jedishrfu

    B Attention: We have an important announcement from our Sun

    Jul 27, 2018
    4
    511
    Replies: 4
    4
  92. Sai Siddhartha k

    B General theory of relativity&Planet orbits

    Jul 27, 2018
    5
    421
    Replies: 5
    4
  93. Simon Peach

    B Dark Matter

    ... 2 3
    Jul 23, 2018
    56
    2,716
    Replies: 56
    2
  94. diogenesNY

    B NYTimes: 79 Moons of Jupiter and Counting

    Jul 20, 2018
    1
    338
    Replies: 1
    2
  95. jedishrfu

    B Blazar as the Source of Cosmic Neutrinos Confirmed

    Jul 17, 2018
    8
    662
    Replies: 8
    4
  96. SlowThinker

    B Known properties and constraints of dark matter

    Jul 15, 2018
    11
    906
    Replies: 11
    4
  97. CygnusX-1
    Featured

    B First Interstellar Asteroid Found

    ... 5 6 7
    Jul 15, 2018
    124
    8,214
    Replies: 124
    37
  98. K. Doc Holiday

    B The Stefan-Boltzmann Law and Sunspots

    Jul 13, 2018
    2
    399
    Replies: 2
    1
  99. MeAndMyLucidLife

    B Why do most of the celestial bodies rotate about their axis?

    Jul 3, 2018
    10
    864
    Replies: 10
    5
  100. jk22

    B Equivalent gravitational forces in other galaxies

    Jun 29, 2018
    3
    468
    Replies: 3
    0
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