Society for Popular Astronomy

Hi David Thanks a lot for your in depth answers to my binocular question, given me a good few options to investigate! Will look into second hand Vixens to start with. Also found this website: http://www.bigbinoculars.com/ which has a good selection, although it is a US site, not sure if they will se...

I am looking to buy a big pair of tripod mounted binoculars for looking at planets, comets etc. Can anyone recommend what I should buy? My budget is £2000.

astronomerjim, your guess to your question is correct. Photons of light, which are massless particles, do not experience what we would call the flow of time.

Weird but true.

Hi all, this is my first post. Been interested in astronomy for a long time, so thought it is a good time to join the forum :) So, Betelgeuse as mentioned by others on the thread is a red supergiant nearing the end of its life. The apparent shrinkage observed could be part of the processes involved ...