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B I A Stargazing Insights
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  1. marksyncm

    I Relationship between star radius and luminosity

    Apr 10, 2018
    5
    711
    Replies: 5
    1
  2. AdrianGriff

    I Questions About Acceleration and Jerk in Orbits

    Apr 8, 2018
    6
    425
    Replies: 6
    1
  3. Harsha Avinash Tanti

    I The Role of magnetic field during the formation of small to medium scale stars

    Apr 8, 2018
    17
    1,158
    Replies: 17
    6
  4. Mohammed_I

    I How do we measure the velocity of stars in a galaxy?

    Apr 8, 2018
    4
    437
    Replies: 4
    1
  5. sophiecentaur

    B North and South poles of Mars are at different temperatures?

    Apr 7, 2018
    13
    784
    Replies: 13
    2
  6. Leonardo Machado

    I Standard Solar Model

    Apr 7, 2018
    4
    424
    Replies: 4
    0
  7. NebulaBilly

    I Diameter of a galaxy

    Apr 6, 2018
    9
    614
    Replies: 9
    0
  8. Greg Bernhardt

    B HiRISE images show strange-looking Mars formations

    Apr 6, 2018
    2
    383
    Replies: 2
    2
  9. Physics345

    B Moon: Apollo 15 Flag Waving

    ... 2
    Apr 2, 2018
    31
    1,515
    Replies: 31
    21
  10. darkmattermonkey

    I Star formation and heavy elements

    Apr 2, 2018
    19
    1,396
    Replies: 19
    12
  11. wolram

    B Chinese not sure where space station will land

    ... 2 3
    Apr 2, 2018
    46
    2,982
    Replies: 46
    22
  12. GTOM

    B Survival on Mars?

    ... 13 14 15
    Apr 1, 2018
    297
    24,835
    Replies: 297
    56
  13. craigi

    A KIC 8462852 (dipping again in March 2018)

    ... 13 14 15
    Mar 30, 2018
    296
    34,015
    Replies: 296
    68
  14. GravityBound

    A On the Pioneer Anomaly onset

    Mar 29, 2018
    5
    835
    Replies: 5
    0
  15. cosmo777

    B Interplanetary travel, Arctic sea ice

    ... 3 4 5
    Mar 28, 2018
    85
    2,916
    Replies: 85
    29
  16. CWatters

    I Net charge on the Earth?

    ... 2 3
    Mar 27, 2018
    42
    1,963
    Replies: 42
    11
  17. quasarLie

    B Sloan digital sky survey

    Mar 27, 2018
    13
    720
    Replies: 13
    4
  18. Phys12

    I Minimizing diffraction in images using a photodetector

    Mar 25, 2018
    1
    375
    Replies: 1
    0
  19. Ziang

    B Supernova DES16C2nm

    ... 2
    Mar 22, 2018
    24
    1,103
    Replies: 24
    1
  20. fizzy

    A What is the cause of lunar nodal and apsidal precession?

    ... 2
    Mar 21, 2018
    34
    7,270
    Replies: 34
    1
  21. jim mcnamara

    B Sholz's star entered the Oort cloud ~70kya

    Mar 21, 2018
    1
    556
    Replies: 1
    0
  22. Aleolomorfo

    I Eddington limit

    Mar 21, 2018
    3
    618
    Replies: 3
    2
  23. NebulaBilly

    I Recession speed of a galaxy

    Mar 18, 2018
    7
    539
    Replies: 7
    2
  24. jedishrfu

    B Physicist who Questioned Black Holes

    Mar 17, 2018
    4
    725
    Replies: 4
    1
  25. Buzz Bloom

    I Qs re aspects of the Holmdel Horn Antenna used to find the CMB

    ... 2 3 4
    Mar 16, 2018
    69
    2,036
    Replies: 69
    14
  26. fresh_42

    B 3rd cosmic velocity

    Mar 15, 2018
    2
    512
    Replies: 2
    7
  27. swampwiz

    B Does a partial solar eclipse never completely rise?

    Mar 14, 2018
    18
    578
    Replies: 18
    6
  28. snorkack

    I Binary pulsar tidal locking

    Mar 14, 2018
    10
    842
    Replies: 10
    1
  29. unusually_wrong

    B RIP Stephen Hawking =(

    Mar 14, 2018
    1
    345
    Replies: 1
    0
  30. Space_Girl

    B Life Outside Our Planet Without Oxygen and Water

    ... 2
    Mar 13, 2018
    30
    1,518
    Replies: 30
    12
  31. BlackholeGirl

    I [Question] Tell me the latest catching news about black holes

    Mar 13, 2018
    6
    679
    Replies: 6
    1
  32. windy miller

    I Would you see stars on the early Earth?

    Mar 12, 2018
    8
    620
    Replies: 8
    2
  33. SMBH

    A IRAF xgterm implot unresponsive (mac OS High Sierra 10.13.3)

    Mar 10, 2018
    1
    342
    Replies: 1
    0
  34. windy miller

    I Northern lights and the magnetic field

    Mar 10, 2018
    3
    345
    Replies: 3
    0
  35. Wondermine

    I The Dark Ages post "Big Bang"

    ... 2 3
    Mar 9, 2018
    46
    1,491
    Replies: 46
    42
  36. mfb
    Featured

    I Observation of Alfvén waves heating the Sun's corona

    Mar 7, 2018
    2
    644
    Replies: 2
    6
  37. Apashanka das

    A Lane-Emden equation

    Mar 7, 2018
    1
    295
    Replies: 1
    0
  38. Apashanka das

    I Chadrasekhar mass

    Mar 7, 2018
    5
    412
    Replies: 5
    0
  39. Teslascience

    I Double dynamo in the sun?

    Mar 6, 2018
    2
    358
    Replies: 2
    3
  40. Buckethead

    B Spiral galaxies: Multiple axies of rotation?

    Mar 6, 2018
    17
    690
    Replies: 17
    7
  41. binbagsss

    A What is the importance of EM measurements in astrophysics?

    Mar 6, 2018
    3
    373
    Replies: 3
    2
  42. ISamson

    B Massive Space Objects Have Connections to QM Math

    Mar 6, 2018
    1
    421
    Replies: 1
    1
  43. Aurorana

    I Confusion about Corotational and Lindblad resonance

    Mar 5, 2018
    3
    516
    Replies: 3
    0
  44. Strides

    I Calculate Voyager trajectory using JPL data

    Mar 5, 2018
    1
    408
    Replies: 1
    0
  45. swampwiz

    B Are the profiles for reflecting/refracting spherical?

    Mar 5, 2018
    4
    367
    Replies: 4
    1
  46. Buzz Bloom
    Featured

    I How close is Earth to the closest black hole?

    ... 2 3 4
    Mar 1, 2018
    79
    5,581
    Replies: 79
    25
  47. bluecap

    B Dark matter variations on Earth

    ... 3 4 5
    Mar 1, 2018
    96
    5,007
    Replies: 96
    29
  48. Spitfire

    I Wonderful new images of the center of our galaxy

    Mar 1, 2018
    1
    466
    Replies: 1
    1
  49. cptolemy

    I Retrograde planets?

    Feb 28, 2018
    2
    477
    Replies: 2
    0
  50. zapnthund50

    I Hubble Velocity

    Feb 28, 2018
    2
    408
    Replies: 2
    2
  51. dennis_n

    B How large would the sun be if it were frozen?

    Feb 28, 2018
    12
    693
    Replies: 12
    9
  52. fizzy

    I Lunar apsidal precession relative to equinox

    Feb 28, 2018
    1
    346
    Replies: 1
    0
  53. Auto-Didact

    A Falsifications and constraints due to GW measurements

    Feb 28, 2018
    15
    1,590
    Replies: 15
    4
  54. Stephenk53

    B Star's first stages

    Feb 26, 2018
    2
    366
    Replies: 2
    1
  55. Sanborn Chase

    I Does the pattern of the CMB change?

    Feb 25, 2018
    2
    431
    Replies: 2
    0
  56. Mlesnita Daniel

    B What do I need to become an Astrophysicist?

    Feb 25, 2018
    2
    526
    Replies: 2
    2
  57. StavrosPanagiotidis

    Interacting Universes

    Feb 25, 2018
    2
    415
    Replies: 2
    0
  58. Tom.G

    I Supernova - the Birth of One is Spotted

    Feb 24, 2018
    3
    721
    Replies: 3
    9
  59. mfb
    Featured

    I 7 exoplanets around TRAPPIST-1

    ... 2 3 4
    Feb 23, 2018
    67
    8,831
    Replies: 67
    47
  60. Laurie K

    A Calculating the Altitude of a Nominal Burst

    Feb 22, 2018
    8
    674
    Replies: 8
    0
  61. A Puzzlement

    I Black Holes and Dark Energy

    Feb 22, 2018
    3
    425
    Replies: 3
    0
  62. quasarLie

    B Quasar SED

    Feb 21, 2018
    5
    320
    Replies: 5
    1
  63. VetStudent

    B Conflicting thought on quasars and black holes

    Feb 19, 2018
    6
    869
    Replies: 6
    3
  64. Duo Tao

    Stargazing Where to buy telescope that measures spectrum?

    Feb 19, 2018
    3
    511
    Replies: 3
    4
  65. Space_Girl

    Stargazing Any stargazers in here?

    Feb 19, 2018
    7
    572
    Replies: 7
    11
  66. swampwiz

    I How bright will Musk's Tesla car be in the sky?

    Feb 18, 2018
    14
    1,637
    Replies: 14
    2
  67. wolram

    B Maximum weight of a Neutron star

    Feb 18, 2018
    5
    829
    Replies: 5
    1
  68. Jeon

    A Galaxy mass distribution without DM

    Feb 17, 2018
    9
    1,240
    Replies: 9
    0
  69. alantheastronomer

    Virial thereom as applied to clusters of galaxies

    Feb 16, 2018
    2
    568
    Replies: 2
    0
  70. Space_Girl

    Stargazing Eclipse (Feb,15 2018)

    Feb 14, 2018
    6
    519
    Replies: 6
    6
  71. Alec Dacyczyn

    I Changing the ISS's orbital inclination to match the Moon

    Feb 12, 2018
    4
    592
    Replies: 4
    0
  72. Al_

    I Moon Poles: Which is better?

    ... 2
    Feb 12, 2018
    33
    1,583
    Replies: 33
    4
  73. |Glitch|

    I New White Dwarf Mass Limit

    Feb 11, 2018
    9
    533
    Replies: 9
    5
  74. Martin Peasha

    B Could we launch spaceships from a long horizontal ramp?

    Feb 11, 2018
    2
    494
    Replies: 2
    1
  75. Go Nucelar

    B Adding a huge electric charge to a black hole?

    ... 2 3
    Feb 10, 2018
    42
    3,248
    Replies: 42
    8
  76. Afina

    B Scattering of light in a strange fashion

    Feb 9, 2018
    2
    455
    Replies: 2
    2
  77. nmsurobert

    I Protostar detection

    Feb 6, 2018
    6
    563
    Replies: 6
    2
  78. William LL

    B Light spectrum of planet Earth as seen from space

    Feb 5, 2018
    3
    456
    Replies: 3
    0
  79. jim mcnamara

    I Extragalactic planets

    Feb 5, 2018
    3
    460
    Replies: 3
    2
  80. wolram

    B If Quark stars exist why do Neutron stars become Black holes?

    Feb 5, 2018
    11
    1,072
    Replies: 11
    5
  81. madsmh

    I Orbit simulations, tidal forces and planetary oblateness

    Feb 4, 2018
    10
    659
    Replies: 10
    0
  82. astrogato96

    I Upper Level Planetary Journal

    Feb 3, 2018
    5
    463
    Replies: 5
    1
  83. BL4CKB0X97

    B Is blue shift as common as red shift?

    ... 2
    Feb 3, 2018
    26
    2,395
    Replies: 26
    9
  84. zdcyclops

    B If the moon were a light bulb how many watts would it be.

    Feb 2, 2018
    13
    1,273
    Replies: 13
    8
  85. jordankonisky

    B The Moon's inclination to Earth's equator

    Feb 2, 2018
    3
    500
    Replies: 3
    0
  86. Charles Link

    B Tonight's full moon and lunar eclipse

    Feb 1, 2018
    11
    635
    Replies: 11
    5
  87. Carpe Physicum

    B How Can Astronomy Even Occur? (Oort Cloud)

    ... 2
    Jan 31, 2018
    35
    1,876
    Replies: 35
    23
  88. GTOM

    B Can Star Wars-like asteroid storms exist?

    Jan 31, 2018
    1
    399
    Replies: 1
    0
  89. DiscoProJoe

    B Temperature of a black hole...observed from the singularity

    Jan 30, 2018
    13
    737
    Replies: 13
    0
  90. heavystray

    B Tc and Teff

    Jan 30, 2018
    2
    401
    Replies: 2
    0
  91. bbbl67

    I What is the minimum mass of a neutron star?

    ... 2
    Jan 28, 2018
    23
    1,423
    Replies: 23
    3
  92. Assaltwaffle

    I Star Gravitational Binding Energy Questions

    Jan 27, 2018
    8
    1,419
    Replies: 8
    4
  93. heavystray

    B Choice of pair of filters

    Jan 26, 2018
    5
    346
    Replies: 5
    0
  94. heavystray

    B Temperature based on colour index using Planck's law

    Jan 26, 2018
    4
    438
    Replies: 4
    0
  95. roineust

    B Is the starshade going to be positioned in a fixed location?

    Jan 26, 2018
    7
    577
    Replies: 7
    5
  96. bbbl67

    I Type Ia supernova involving binary white dwarfs?

    Jan 25, 2018
    8
    667
    Replies: 8
    2
  97. David Roberts

    Could Dark Matter be H or He? They are pervasive

    Jan 25, 2018
    11
    965
    Replies: 11
    1
  98. MulderFBI

    B Unusual object on video - any explanation?

    Jan 24, 2018
    3
    659
    Replies: 3
    5
  99. JohnnyGui

    I Some confusion about Kepler’s formula

    Jan 23, 2018
    11
    811
    Replies: 11
    3
  100. jim mcnamara

    B Wonder-inducing ring galaxy image

    Jan 23, 2018
    5
    560
    Replies: 5
    5
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