Satellites – Where are they?

Look up and spot the satellites above you. How far are they? Well, if you could lift up the front of your car until it was standing on its exhaust pipe and then drive straight upwards, the nearest ones are only one hour’s drive away, assuming your car can go 160km/h. I’m sure mine could achieve that – on the way back.

Virgin Galactic is taking deposits (now) to fly you not quite so high (one day) for R2,5m.

Altitude

Satellite Types

160-480km

shuttles, space stations, spysats, navsats, hamsats

480-960km

weather sats, photo sats

960-1 900km

spysats, military comsats, hamsats

4 800-9 600km

science sats

 1 000-19 000km

navsats (eg. GPS)

36 000km

communications, broadcast, weather (geo-stationary)

Those that stay in one position relative to earth (the ‘geo-stationary’ ones) are a bit further and it would take you about two weeks of non-stop driving to get to the DSTV satellite (please switch off all those “reality” shows while you’re there), so better pack some sarmies and a flask of coffee. And take blankets.

car in space_2.jpg

Two geo-stationary satellites.

On this scale the space shuttle and spysats are flat against the earth – you couldn’t see any space between them and earth they’re so close.

So: Ready to take a R2 500 000 flip?

Virgin Galactic.jpg

The furthest ‘satellite’ you wouldn’t be able to drive to, though. It is now 20 640 000 000km away. Voyager 1 was launched in 1977. It’s more a ‘space probe’ and it’s flying away from us at about 17km per second. Voyager 1 is the first and only man-made object to have explored Uranus and Neptune, and to have left our solar system. A radio message from Voyager 1 now takes over 19hrs to reach us.

voyager-1.jpg

My Education Proceeds Apace

Two versions of “pace” on this morning’s school run:
Tom – Dad, I PACED him (telling how he had run around some hapless defender on the rugby field).
Faatima – I have to learn to PASTE myself when running (telling how she runs with her 18-Comrades-medals Dad).

I learn a lot on the school run . . .

De-Merits

Tom got two more. One for flying a paper plane in class. The other for shirt out and socks down. Shirt out or Socks down No. 132

I said –

“¶¶You’re in trouble, boy and now you’re headed in for more. It’s the same old story¶¶:

Either you build a paper plane that flies the length of the passage or . . . “

No problem. Fold fold fold fold fold, flick. We high-fived before it even landed.

See, Dad, I made it for Teshail and it was passed around the class and then came back to me. I threw it at Teshail but it went too far and landed on Mr Verster’s desk.

OK, boy. I see.