Tag: fundamental-astronomy

22 How would the night sky look from inside a globular cluster? 2013-12-24T17:53:35.807

20 Where can I find/visualize planets/stars/moons/etc positions? 2016-02-02T18:43:24.087

18 What would the night sky look like if the Milky Way were the only galaxy in the universe? 2016-05-01T11:56:00.690

13 Open problems in astronomy that an amateur (with a PhD in some other field) would have a chance of solving? 2015-04-05T12:20:26.120

12 How to discover Neptune from the Uranus orbit (by computer simulation) 2016-12-19T21:54:48.867

11 Was the progress of astronomy in the 1800s surprisingly slow, and if so why? 2014-05-27T15:04:31.760

10 How can I contribute to the scientific community using my telescope? 2018-01-27T16:52:24.900

9 Calculation of right ascension and declination 2013-11-27T16:19:55.220

8 How well can we in principle determine $T_{\textrm{eff}}$ of a star? 2013-11-23T16:44:37.567

8 Are there more stars than all the words ever spoken by humans? 2015-02-18T20:24:54.580

8 Why you use log to measure metallicity in galaxies? 2015-09-17T03:39:32.433

8 Planning to revisit Arthur Eddington's experiment from 1919 2017-06-08T16:51:32.163

7 Calculation of Horizontal Coordinates 2014-05-21T19:01:50.777

7 Astronomical databases for machine learning? 2015-04-18T09:48:55.647

7 Why do we use FITS format for scientific images especially in astronomy? How is it different from formats such as JPEG, PNG etc? 2016-05-29T19:20:53.427

7 Astronomical ABCD...! 2017-11-16T13:03:37.163

7 Why does each and every planet of our solar system have an unique axial tilt angle? 2018-06-08T18:33:27.553

7 What was the length of the solar day 73 million years ago? 2018-10-10T22:50:11.450

6 How to measure the altitude and azimuth of a star? 2013-12-09T18:03:21.887

6 How to plot orbit of binary star and calculate its orbital elements? 2014-01-08T22:49:24.967

6 A curious relationship between lunar periods and the solar year 2014-03-24T21:11:20.930

6 Why didn't Johannes Kepler use data about more planets? 2014-10-11T10:54:18.700

6 Image sets for testing stacking algorithms? 2015-04-25T15:59:40.380

6 How can we be 13.2 billion light years from another galaxy? 2015-08-12T00:43:12.237

6 How were the orbits of planets first mapped out? 2015-11-25T13:36:11.740

6 Planetary reference systems and time 2016-01-25T18:11:02.340

5 Coordinate transformations between reference frames in spherical astronomy 2013-12-10T01:16:49.263

5 Location on (or in) the celestial sphere 2014-02-18T20:54:05.073

5 How did Copernicus get the idea of heliocentric model? 2014-04-14T07:12:05.070

5 Calculating Angular Distance 2014-05-25T21:47:02.910

5 Is there a flaw with the newer purposes and correlations attributed to the HR diagram? (And would a third axis of mass correct the enclosed flaw?) 2014-06-23T17:11:45.777

5 How many astronomers are there in the world today? 2014-09-11T15:12:00.033

5 Where to obtain Tycho Brahe's data? 2015-04-11T20:15:06.700

5 Which is more rare: Lunar eclipse or Solar eclipse? 2015-05-15T03:41:14.057

5 What exactly is 'eastward movement' 2015-12-16T02:42:57.943

5 K-Pg asteroid impact 2016-03-06T12:05:46.857

5 Which came first: Galaxies <=> Stars <=> Planets? 2016-08-04T21:19:18.000

5 Does an algorithm exist that takes an image of the night sky and tell you where in the milky way that perspective likely originates? 2017-03-13T07:28:40.417

5 How to know that the 21cm Hydrogen line is the actual emission and not any other redshifted line? 2017-08-23T11:18:24.977

5 Directions to Proxima Centauri 2018-06-23T22:59:11.757

4 Acronyms of catalogs in SIMBAD database 2014-02-01T16:53:46.337

4 How and when did we learn about the universe? 2014-04-19T22:48:36.727

4 Red shifting galaxies 2014-12-03T03:25:31.543

4 Which is the shape of the sky? 2015-06-28T15:48:21.510

4 Speed of light through the ISM and Wavelength 2015-07-14T22:02:59.480

4 Numbers 80 to 85 in Ancient Astronomy 2016-09-07T23:20:51.440

4 Sun Zenith angle and location on earth 2018-01-24T21:54:11.093

4 Creating a rectangular star map 2018-01-25T09:40:12.120

4 Relation between angular resolution and aperture? 2018-05-23T01:39:58.597

3 How to calculate Longitude from Right Ascension? 2013-12-12T08:38:03.203

3 Is there an astronomy exam I can take? 2014-09-12T14:33:36.400

3 Requesting book references for a non-expert person with math background or just a non-expert person 2014-09-20T09:46:08.350

3 Equations for coordinates of solar system objects 2015-04-11T10:41:19.550

3 What to do after first year of amateur astronomy? 2015-06-27T13:36:42.350

3 Does a week represent something in astronomy? 2015-06-29T19:14:19.423

3 What is the effect of the axial precession on the orientation of the planet's orbits? 2016-05-16T20:40:08.470

3 What is meant by ionization states? 2016-05-18T09:45:25.607

3 Massive degraded impact crater on Mercury - chemical evidence? 2016-11-07T13:10:52.780

3 In layman's terms, why do we put the "time" in space-time? 2016-11-07T17:52:25.693

3 If I look beyond (about same region, higher redshift) a galaxy, will I see its progenitors? 2017-12-19T13:16:37.373

3 Finding the radius of a star in arcsec 2018-02-28T16:47:05.080

3 Flatness of celestial systems like galaxies and Solar System 2018-04-05T04:36:15.587

3 Photometric redshift 2018-05-02T07:58:30.867

3 Account for radiation energy in the statement "total energy of universe is zero" 2018-05-28T17:30:21.187

3 What liquids can be found in the void space? 2018-11-25T18:53:48.763

2 Please take the time to visit Meta! 2014-01-16T15:41:44.723

2 Is it possible to calculate the time of day given latitude, longitude and solar elevation angles (zenith, azimuth, elevation)? 2014-02-10T20:19:23.140

2 Coordinates of the Moon 2014-06-10T17:38:11.937

2 How might Thales have predicted a solar eclipse? 2014-06-12T07:59:38.233

2 Do astronomers, in principle, have more information about older phenomena than younger? 2015-03-30T19:41:51.643

2 How to calculate position of an unknown star knowing positions of some other stars from an image? 2015-04-18T17:34:46.937

2 Name and language of symbol in astronomy book 2015-06-20T18:59:04.023

2 Can angular information be known more precisely than the diffraction limit? 2016-01-04T07:29:23.917

2 Are any other planetary bodies warming up as well in the Solar System? 2016-02-08T18:48:18.933

2 Determining distance from semi-major axis and eccentricity 2016-02-09T21:03:14.897

2 Power of the James Webb Space Telescope 2016-03-04T19:27:26.073

2 Equation of the Center constant factor 2016-03-14T03:20:42.343

2 If the universe is 'flat', what shape is it? 2016-08-04T22:23:36.607

2 Amateur astronomy plan for GCSE students 2016-08-30T13:07:57.093

2 Why the Hubble constant is so inconsistent? 2017-01-06T18:16:08.077

2 Can some stars not emit any energy in the visible spectrum? 2017-02-15T01:34:53.593

2 The M-theory to understand black holes 2017-06-09T13:36:08.370

2 Units of integrated flux density (irradiance) along longitudes 2017-10-30T01:31:43.043

2 How small a location is possible to identify when any visible star is at its zenith directly above? 2017-12-16T07:16:15.357

2 What happens if one day aliens want to talk to us. How can we talk to them? 2018-02-14T05:38:36.977

2 Tips for a beginer who wants to learn more about astronomy 2018-04-17T17:31:34.277

2 Obtain IR diffuse data from WISE 2018-05-22T11:14:47.463

2 When black holes forms out of a supernova do they have a very high velocity? 2018-05-28T16:34:33.430

2 Need help with the calculations/conversion of a celestial object 2018-09-04T09:32:25.483

1 Basic celestial data 2014-07-19T10:04:05.383

1 Why don't planets give off their own light? 2014-08-19T13:05:04.573

1 Calculate time when star is above altitude 30° 2015-06-04T08:56:56.800

1 Calculation of hour angle 2015-11-26T23:36:27.173

1 Star Formation in the future 2016-01-11T06:51:24.360

1 Black holes and time relation 2016-01-12T11:00:54.580

1 Why do we need the "mean" in mean free path? 2016-03-07T16:07:42.123

1 How can apparent magnitude be negative? 2016-04-12T17:19:41.030

1 Cosmic microwave background radiation: why did it take so long to get here? 2016-10-15T19:49:36.363

1 Attempting to determine astronomy values in a parameter file 2016-11-06T18:58:40.550