Moon: Sending people: been there, done that. Learned a lot. Now it's time for robots to build a series of radio telescopes on the far side and other telescopes...

Guys, About resolution charts and resolving lines per millimeter. What is its relationship to the A/D converter used. Between 8 bit A/D vs 12 bit or 16 bit...

Starts just after sun-up EST and lasts until mid-afternoon. I've seen two Venus transits so I hope this one isn't clouded...

The "Christianity and Science" discussion prompted me to ask: Do you believe 1. that we're alone in the universe? (can't decide, some days yes, other days...

"Kevin Rehberg" wrote: Did anyone else that has seen it catch the crude refractor (it's basically an objective and a couple...

ok, so I looked at a meade LX200 12", about US$3500 in the US, about EUR6200 in europe. With the current dollar/euro rate, EUR6200 = US7800, so the scope is in...

The independent daily rotation of the Earth is expressed in 23 hours 56 minutes 04 seconds however the illusion and the nightmarish quality emerges after two...

Studies have shown support for the agency is dropping. With idiot Obama and NASA's cancellation of both the versatile Space Shuttle and Moon mission, and...

With the advent of astro programs that can be used to check ancient astronomy texts, there is a suggestion that Seleucid Period texts were purposely altered...

What exactly does it "mean" for an optic to be diffraction limited? Does it mean that the optic is capable of achieving the maximum resolution of its...

Can anyone explain what's up with the price of Orion's APO? Is it $499? The S&T article shows it at $429. Did it go up? Was it improved? I want a good...

Regardless of differences in inclination,rotation and orbital characteristics,all planets received the same budget of daylight and darkness over an orbital...

Had my F5 dob out last night doing a bit of viewing, but after about an hour gave it up as cold wind was coming. I stayed up until almost 3am trying to clean...

Elon Musk says his new rocket will fly you anywhere in the world in under an hour for the cost of economy airline...

Hey all, I happened to catch The Daily Show (on Comedy Central) the other night. The guest for the show was some lady that is on the Mars rover team. I was...

Bomb builder turned critic passes away http://physicsweb.org/articles/news/9/4/14/1 26 April 2005 Philip Morrison, one of a generation of physicists who built...

Hi Everybody Today I received my first 3 samples Orion 80 mm ED Apos and could already test them. I would like to receive some feedback from customers who...

I am extremely disappointed in the CNN coverage of Mars. They went to all the trouble to send a reporter and didn't use him. When the pictures started coming...

Prices seem to have dropped on many items...except astro equipment. Why not astro equipment? TMT

They're "uncomplicated" to put it succinctly. Often I've attended star parties where I and most of the other attendees have fallen into the trap of being...