Wednesday, June 10, 2009

Black Holes, Gravity Wells

If a spacecraft uses a massive object for a "slingshot", it is passing through more "space". Since the massive object "warps" the space (compresses it) then the spacecraft covers more distance in the same time as a similar spacecraft that doesn't pass close to a massive object, therefore the slingshot spacecraft is "accelerated" from the viewpoint of the second spacecraft. Instead of the standard "rubber sheet" with bowling balls, I think of the warping of space around a massive object (or ANY object with ANY mass) as a pane of broken glass with a, say, bullet hole representing the mass in space... Still very two dimensional, but maybe it works for you, too!

Tuesday, March 17, 2009

Hubble view of Saturn transits

I copied this from the blogsite (they got it from Hubble).

This shows five moons, four crossing the face of Saturn. The large orange moon is Titan, to the right of Titan is Mimas; to the left of Titan are Enceladus and Dione. Janus is just below the rings. Credit to: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

Monday, March 2, 2009

Back in 1975

Okay, this is me back in 1975 (maybe 1974)

I was not cool, but I didn't care...

Sometime before this I decided that I wasn't going to be a scientist. I chose a career in Television/Film production and looked the part.

That only lasted a couple of summers, then I discovered skiing!

Thursday, June 12, 2008


My daughter did a science project on growing crystals.

Sugar crystals are hexagonal in shape, and salt crystals are cubic.

I have some photos taken on the macro setting of our point and shoot Canon.