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Midnight Christmas Eve by Marty[_3_]
For right about 50 years, it has been my personal tradition to be outside at midnight on Christmas. Either midnight will do, it's a busy time of year, but I...
December 27th 17 01:51 AM
by Marty[_3_] Go to last post
4 183
One easy question by Gerald Kelleher
It is the easiest possible question to ask and answer - If daily rotation which causes the day/night cycle ceased to exist, would a person on the surface...
(Multi-page thread 1 2)
December 22nd 17 03:37 PM
by Gutless Umbrella Carrying Sissy[_2_] Go to last post
15 232
Idaho gets dark sky site. Maybe some of the rules should be appliedto cities? by RichA[_6_]
Since 90% of us live in cities, and driving 500 miles to the sticks all the time is impractical, some control over the wastage of electricity via light might...
December 22nd 17 09:15 AM
by Chris.B[_3_] Go to last post
1 130
Primitives and leftist environmentalists still trying to stop Hawaii30m telescope project by RichA[_6_]
Worthless. The consortium has agreed to a number of things (including tearing down a few perfectly GOOD, working telescopes already on Mauna Kea), but the...
(Multi-page thread 1 2)
December 21st 17 03:10 AM
by Razzmatazz Go to last post
17 247
Bitcoin = 19223.99 US Dollar by StarDust
How many telescopes can be bought from 1 bitcoin, eh? (o:
(Multi-page thread 1 2)
December 20th 17 06:30 AM
by Chris.B[_3_] Go to last post
10 208
Ponder this by BogeyOne
Your doctor says that you only have about 6 years left to live. If you had a chance to go to Mars and it was certain that you would return safely to Earth,...
December 19th 17 07:20 AM
by Chris.B[_3_] Go to last post
7 143
Solstice and EPIC by Gerald Kelleher
https://epic.gsfc.nasa.gov/ The area around the South pole is now in full view while its Northern counterpart is entirely absent. Far removed from the usual...
December 18th 17 05:16 AM
by Gerald Kelleher Go to last post
2 172
The Progressive Niceness of Science by Quadibloc
An Ars Technica article gave me this link: http://chem.tufts.edu/answersinscience/relativityofwrong.htm which is an essay by the (horrors!) _science fiction_...
(Multi-page thread 1 2)
December 17th 17 10:17 AM
by Chris.B[_3_] Go to last post
19 247
Solstice vs Equinox, daily and annual cycles by Gerald Kelleher
In less than a week the Solstice event occurs and the true definition is represented by the position of the North and South Poles to the circle of illumination...
December 16th 17 05:22 PM
by Gerald Kelleher Go to last post
0 137
Useless planetary system by RichA[_6_]
Unfortunately, the 8 planet system only has one planet at a suitable "Earth" distance from its star and that planet is probably a gas giant. The discovery of...
December 15th 17 04:15 PM
by Gerald Kelleher Go to last post
3 147
The Equation of Time(keeping) by Gerald Kelleher
The basic experiment involves either a sand or water clock. The period of one noon to the next full cycle would generate different volumes of water and sand...
(Multi-page thread 1 2 3 ... Last Page)
December 13th 17 06:09 AM
by Gerald Kelleher Go to last post
38 592
North Korean [intestinal] worms on Mars? by Chris.B[_3_]
http://www.astronomy.com/news/2017/12/worms-on-mars Ironically, worms could be be the answer to feeding the pioneering Mars settlers. Even more ironically,...
December 8th 17 12:16 PM
by Gary Harnagel Go to last post
4 165
Some Historical Dates by Quadibloc
Newton's Principia was first published in 1686, and an English translation was first published in 1728. It was in 1758 that the general rule placing books...
December 7th 17 07:33 AM
by Chris.B[_3_] Go to last post
3 162
Messier 76 - "Spirit of 76" - Red - White - and Blue by Razzmatazz
Just before winter sets in the outer arms of the Milky Way pass overhead. Embedded in them are regions of star formation and star death. M76 is a Planetary...
(Multi-page thread 1 2)
December 6th 17 05:58 PM
by Chris.B[_3_] Go to last post
10 183
Voyager 1 Fires Up Thrusters After 37 Years by palsing[_2_]
This is so cool!...
(Multi-page thread 1 2)
December 5th 17 11:38 PM
by Gutless Umbrella Carrying Sissy[_2_] Go to last post
14 179
'Oumuamua by Mike_Duffy
Reference is to: https://en.wikipedia.org/wiki/%CA%BBOumuamua In the opening paragrapgh, it states: " is the first known interstellar object to pass through...
(Multi-page thread 1 2)
December 5th 17 09:05 PM
by Paul Schlyter[_3_] Go to last post
14 192
Radio Meteor Obs. Bull. November 2017 by Chris Steyaert
Radio Meteor Observation Bulletin No. 292 of November 2017 (49 K) is available now as http://www.rmob.org/rmobtext/rmob1711.txt More information and the...
December 5th 17 08:28 PM
by Chris Steyaert Go to last post
0 113
Paint the inside of telescopes with? by RichA[_6_]
Honestly, there is a new material like is announced every five years or so. Nothing much comes of it, but who...
December 5th 17 04:53 AM
by RichA[_6_] Go to last post
5 182
Used Kendrick's Laser Collimator for an SCT? by Dan Wenz
Has anyone read Kendrick's comments re. the laser collimator as used for an sct at the url below? http://kendrick-ai.com/astro/misconceptions.html I've read...
December 5th 17 03:38 AM
by [email protected] Go to last post
8 344
Meteor streak caught on cam across Phoenix sky by StarDust
https://www.youtube.com/watch?v=MN45-UTm0nc Wonder if that meteor can be located some how?
November 26th 17 07:01 AM
by Chris.B[_3_] Go to last post
7 153
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