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Growing into a new approach by Gerald Kelleher
Planetary climate on a solar system scale is common to all planets regardless of composition or distance from the Sun so long as a planet has an...
June 4th 18 09:03 PM
by Gerald Kelleher Go to last post
1 138
All Those White Dwarfs by Quadibloc
but not one of them closer than Alpha Centauri, apparently, so the textbooks aren't...
June 4th 18 05:10 AM
by Quadibloc Go to last post
1 154
China launch will prep for Moon landing by StarDust
http://www.bbc.com/news/science-environment-44198673 China has launched a relay satellite to prepare for a lunar rover mission planned for later in the...
(Multi-page thread 1 2 3 ... Last Page)
June 1st 18 05:17 AM
by StarDust Go to last post
30 473
Questar 5 specifications released, mounting specs later? by RichA[_6_]
Curious to see if they produce a modernized, electronicized mount or just a regular none Goto unit, perhaps with DC...
May 31st 18 12:50 AM
by RichA[_6_] Go to last post
9 314
meteorobs mailing list by [email protected]
What happened to the meteorobs mailing list? The former website for it appears to be junk now...
(Multi-page thread 1 2)
May 29th 18 05:04 PM
by [email protected] Go to last post
10 494
Illusory loops vs actual loops. by Gerald Kelleher
The geocentric astronomers since the time of the Greeks observed that while the Sun appeared to travel through the background stars directly, all planets would...
(Multi-page thread 1 2 3)
May 26th 18 06:48 PM
by Gerald Kelleher Go to last post
26 472
North Korea to become magnet for amateur astronomers? by Chris.B[_3_]
With the previously closed country opening up to exploitation the dark skies could attract amateur...
(Multi-page thread 1 2)
May 26th 18 06:36 AM
by Chris.B[_3_] Go to last post
15 391
It took NASA...four years to design a drone. by RichA[_6_]
http://www.bbc.com/news/world-us-canada-44090509
(Multi-page thread 1 2 3)
May 25th 18 01:16 AM
by RichA[_6_] Go to last post
22 457
Some More Light Pollution by Quadibloc
Intended to be in a good cause... http://mashable.com/2018/01/24/rocket-lab-humanity-star-satellite-brightest-object/#yQ.3YRxqwqqZ John Savard
May 22nd 18 11:32 AM
by Mike Collins[_4_] Go to last post
2 269
KÄ«lauea by Gerald Kelleher
This part of the Earth's geology brings it closest to that of Venus as the volcano itself is far from crustal boundaries where most of the evolutionary geology...
May 16th 18 07:21 AM
by Chris.B[_3_] Go to last post
2 208
Full moon at the South Pole by Gerald Kelleher
https://www.moongiant.com/phase/today/ https://www.usap.gov/videoclipsandmaps/spwebcam.cfm What a difference the diminishing light of the moon makes as...
May 10th 18 06:31 AM
by Gerald Kelleher Go to last post
7 235
First day of summer by Gerald Kelleher
The Celtic tradition broke the year into the light half which starts half way between Equinox and Solstice on May 1st (closest date) while the dark half began...
May 2nd 18 08:27 AM
by Gerald Kelleher Go to last post
1 243
Questar 5 specifications released: by RichA[_6_]
Interesting. An in-baffle tube field flattener. I'd probably have made it outboard and a f-stop reducer, but this still looks good. Figure maybe $5000 for the...
April 30th 18 12:51 AM
by Davoud[_1_] Go to last post
5 765
NASA is robbing the Russians blind by Quadibloc
A Verge article about delays in the publication of installments of _A Song of Ice and Fire_ says Russia charges $80 million per astronaut ferried to the...
April 29th 18 07:07 AM
by Chris.B[_3_] Go to last post
8 230
Actual time lapse vs distorted time lapse by Gerald Kelleher
The daily motion of the surface across the fully illuminated face on the September Equinox follows, at least from an orbital perspective, a Northwest to...
(Multi-page thread 1 2 3)
April 28th 18 09:34 AM
by Gerald Kelleher Go to last post
29 560
Averaging and the Equation of Time by Gerald Kelleher
Here take notice, that the Sun or the Earth passeth the 12. Signes, or makes an entire revolution in the Ecliptick in 365 days, 5 hours 49 min. or there...
April 23rd 18 09:12 PM
by Gerald Kelleher Go to last post
7 215
Hey, hook this up to a scope! by RichA[_6_]
https://www.dpreview.com/news/9846474491/you-can-own-the-world-s-first-single-shot-8-10-digital-camera-for-106-000
(Multi-page thread 1 2)
April 23rd 18 02:23 AM
by Davoud[_1_] Go to last post
18 277
We need new nomenclature by RichA[_6_]
I read a review of the ugly Baader Morpheus eyepieces on cloudynights and something stuck me. The reviewer used the term, "diffraction rings" (of a star)when...
April 17th 18 01:37 AM
by Razzmatazz Go to last post
2 217
NASA slips up! The TRUTH is finally revealed! by Quadibloc
Look at this image describing Exploration Mission-1: https://www.nasa.gov/image-feature/exploration-mission-1-map and the similar image about Exploration...
April 17th 18 12:29 AM
by Quadibloc Go to last post
7 212
Space Junk's R Us. by RichA[_6_]
http://money.cnn.com/2018/04/12/technology/vector-jim-cantrell-rocket-manufacturing/index.html
April 14th 18 07:47 AM
by Chris.B[_3_] Go to last post
1 218
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