On Feb 3, 8:55 am, "Szczepan Bialek" wrote: Everywhere is wrote: "The moon's mass is 81.3 times smaller than Earth's". I have also read...

CC: On Tue, 8 Apr 2008, amisb65 wrote: What you are about to read might sound unusual but it could be...

Can AU mean something other than Astronomical Units? Given this formula: (m1 + m2)T^2 = a^3 T=years m=solar masses a is in units of AU Can anyone guess what...

I believe they started as a huge rock metal core greater than the mass of the earth that was capable of gathering their huge gas atmospheres through great...

Hi: I wish white holes existed. It would make life more interesting. However, there is a problem. The existence of white holes requires that: 1. Entropy of...

....is there a visual (naked-eye) equivalent?

The following was forwarded to me by my son-in-law and as a dad and grandfather I cannot help myself I am forwarding this every way I can...please take a...

Did anyone see an asteroid pass Earth on Friday (around 1330 hours Universal Time if I am translating the time zones correctly)? I just switched to the Dish...

I was doing a Christmas lecture earlier in the the week on "Light and Colour". I had an unexpectedly strong positive audience reaction from a very simple and...

Hi there, I was watching a TV program yesterday called "Beyond the Bigbang". A statement was made in the program that the universe was about 13.7 billion...

Hi all, Here's another shot of the inner coma structures taken on the night of the 30th October 2007. Note the interesting features close to...

The recent announcement that a tenth planet has been found sounded similar to an anouncement of another tenth planet found about a year ago called sedena (or...

is there any advantage to having the extra baud rate of USB over RS232 for controlling Meade Scopes?. I am only guessing now but I imagine there isnt huge...

Did anyone get any unusual results? Single observer counts already adjusted for cloud cover 02:30 - 03:30 ~ 6 (30% cover) 03:30 - 04:30 ~ 8 (50% cover) 04:30...

Hello Can anybody point me in the direction of a good lunar map, preferably online but a book is ok too. cheers, mark

http://www.nmm.org.uk/index.cfm?SelectedProductPLUNo=39109 mikej

Driving home tonight it was obviously going to be a nice clear evening so I decided to have a go at photographing the Orion nebula.. There's a sample pic at...

Dear Group, The oldest (or second oldest) open star cluster in our galaxy is Berkeley 17 in Auriga with an estimated age of 10.06 billion years. Lying at a...

Astronomy is on the front page of the Times this morning, but not the way you would prefer. As my wife said when she brought the paper in and handed it to...

Whilst hopelessy trying to find a place to turn around in Playa Paraiso (a residential area on the Costa Adeje in Tenerife) I noted a villa on the edge of this...