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Polar astronomy by Gerald Kelleher
Lots of innovations to consider during the period of polar twilight after the March Equinox at the South Pole station. The same principles apply to polar...
(Multi-page thread 1 2 3 ... Last Page)
April 9th 18 10:57 AM
by Quadibloc Go to last post
49 840
Radio Meteor Obs. Bull. March 2018 by Chris Steyaert
Radio Meteor Observation Bulletin No. 296 of March 2018 (58 K) is available now as http://www.rmob.org/rmobtext/rmob1803.txt More information and the visual...
April 5th 18 07:29 PM
by Chris Steyaert Go to last post
0 261
Proving the Earth's orbital motion. by Gerald Kelleher
The RA/Dec observers try their level best to equate circumpolar motion to daily rotation and that uses up the observation of the motion of the stars...
April 5th 18 04:38 PM
by Gerald Kelleher Go to last post
7 308
Tabby's Star Dimming Again by Quadibloc
Saw this news item: https://www.extremetech.com/extreme/266474-alien-megastructure-star-enters-another-dimming-phase John Savard
(Multi-page thread 1 2 3 ... Last Page)
April 5th 18 12:08 AM
by Jibini Kula Tumbili Kujisalimisha Go to last post
39 603
Lucky it wasn't the other way around by Quadibloc
Human activity actually improved the effectiveness of the van Allen belts as a barrier to space...
April 4th 18 07:02 AM
by Chris.B[_3_] Go to last post
2 232
John Harrison's Birthday by Gerald Kelleher
The British had such an amazing engineering tradition and perhaps second to none including the technological era of the internet, computers and rocketry. The...
April 3rd 18 09:16 AM
by Gerald Kelleher Go to last post
0 193
Instruction for genuine teachers by Gerald Kelleher
When Copernicus first proposed the resolution of direct/retrograde motion, he did not discriminate between the faster and slower moving planets seen from Earth...
April 2nd 18 10:52 AM
by Gerald Kelleher Go to last post
1 201
Where will it crash? by StarDust
Where will it crash? China confirmed in 2016 that it had lost contact with Tiangong-1 and could no longer control its behaviour, so we don't really know where...
April 2nd 18 04:51 AM
by StarDust Go to last post
5 176
Crappy Chinese space station falling out of the sky any day now by RichA[_6_]
Check-out the detector device. Looks like a Samyang manual focus lens attached to a CCD camera of some...
April 1st 18 06:10 PM
by Chris L Peterson Go to last post
5 194
Chinese junk to fall on Walmart by RichA[_6_]
Get it? Two jokes in one. https://www.cnn.com/2018/03/29/asia/tiangong-1-china-space-lab-intl/index.html
April 1st 18 05:16 PM
by RichA[_6_] Go to last post
0 156
Voyager responds after 37 years of inactivity by StarDust
https://www.youtube.com/watch?v=m1PGo_MB11M I wonder, where they got this sexy astronomer girl, Chavez?
March 31st 18 06:38 AM
by StarDust Go to last post
0 193
Webb Telescope delayed until mid 2020 by RichA[_6_]
http://www.bbc.com/news/science-environment-43559980
March 29th 18 07:56 AM
by Gerald Kelleher Go to last post
1 215
What DST does by Gerald Kelleher
The daily cycle is anchored to noon where sunrise and sunset are more or less symmetrical either side of this fixed astronomical event regardless of...
March 26th 18 03:29 PM
by Gerald Kelleher Go to last post
6 199
Amazing Astronomical Discovery by Quadibloc
Our Solar System now has a fourth planet! Yes, an astronomer encountered an unexpected bright object in his field of view, and reported the discovery without...
March 25th 18 10:17 AM
by RichA[_6_] Go to last post
6 224
Geometric DNA by Gerald Kelleher
The structure does not originate with me hence my reluctance over the past 30 years to show it and especially among a hostile or uninterested bunch of people...
March 24th 18 08:37 AM
by Gerald Kelleher Go to last post
0 197
The Equinox defined by Gerald Kelleher
Even in geocentric terms the Equinox is a special day with two distinct types of sunrises and sunsets. The Sun will come into view for the one and only time...
March 21st 18 03:02 PM
by Gerald Kelleher Go to last post
7 228
RIP, Stephen Hawking by palsing[_2_]
A brilliant life has finally come to an end at age 76. We are very lucky to have had him for so long. \Paul A
(Multi-page thread 1 2 3)
March 21st 18 12:55 PM
by Chris.B[_3_] Go to last post
25 416
A rotating Earth with a proper inclination by Gerald Kelleher
https://en.wikipedia.org/wiki/Deep_Space_Climate_Observatory#/media/File:EpicEarth-Globespin-tilt-23.4.gif By right the rotation relative to the orbital plane...
March 18th 18 07:18 PM
by Gerald Kelleher Go to last post
2 245
The photographic medium Joe Public isn't allowed to buy by RichA[_6_]
Neutron imaging!! https://en.wikipedia.org/wiki/Neutron_imaging However, Muon imagers may at some point be available, they are used now to x-ray vehicles...
March 18th 18 02:13 PM
by Chris L Peterson Go to last post
5 196
Sub-Auroral Ion Drifts discovered to cause unusual purple aurora by Quadibloc
I ran across this news item: https://phys.org/news/2018-03-mystery-purple-sky-citizen-scientists.html John Savard
March 18th 18 09:01 AM
by Paul Schlyter[_3_] Go to last post
6 228
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