JoNova

A science presenter, writer, speaker & former TV host; author of The Skeptic's Handbook (over 200,000 copies distributed & available in 15 languages).


The Skeptics Handbook

Think it has been debunked? See here.

The Skeptics Handbook II

Climate Money Paper


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Australian Environment Conference Oct 20 2012


micropace


GoldNerds

The nerds have the numbers on precious metals investments on the ASX



Weekend Unthreaded

Cumulonimbus over Queensland | Photo by Geoff Derrick | Click to enlarge

Magnificent.

Weekend Unthreaded

Australian Outback  | Photo by Geoff Sherrington  | (Click to enlarge)

… Photo by Geoff Sherrington

Unthreaded Weekend

Carved granite  | Photo: Jo Nova

Each year the winter whitewater carves out a tiny bit more rock, and each summer we see the ripples in the granite.

Is a rock on the way? (and a Weekend Unthreaded)

50,000 years ago a bit of wayward rock about 50m across met Earth and left this 1200m wide crater in Arizona.

Ponder the momentum of 50m bit of rock that left a hole over a kilometer wide and 200m deep.

If one was coming. Would we know?

…(Click to enlarge) Photo not by JoNova

 

Thanks to NASA and The Earth Observatory

UPDATE: JoeV in comments adds an interesting link to Tracking space junk at Satview.org. An old satellite is coming in right now. It’s over Alaska (moving fast) at 153km high and falling quickly. Cosmos 1220, a Soviet era military surveillance satellite.  Eddie adds a different link which suggests Cosmos is expected to crash into the Pacific in hours. Amazing what you can find out on the Internet.

 

Unthreaded Weekend

For all those other thoughts…

Unthreaded Weekend

Interference patterns ripple through clouds at my favourite rock pool.

 

Weekend Unthreaded

..

… (Click to enlarge) Photo: Jo

I took this flying from Denpasar to Perth. Glorious ancient landscape in the dry season north-west WA. Click for a larger broader image.

UPDATE: thanks to help from Steve R W, I think I’ve found the location. It appears to be part of a long ridge in The Barlee Range, just north of the Frederick River in the Pilbara area of Western Australia.  It is so remote, Google Earth tells me “you can’t get here from where you are”.

Unthreaded Weekend

 

Litchfield National Park, Northern Territory Australia (Click to enlarge) Photo: JoNova

Weekend Unthreaded

A couple of hours north of Perth. It’s not snow.

Weekend Unthreaded

Funny what you see driving home from the shops…. hundreds of thousands of tons of water-vapor had condensed in giant suspended formations. No one seemed to notice.

Click to enlarge. Facing west East (dammit East) over Perth, last night.

Unthreaded Weekend

 

The old jetty at Port Denison, 3 hours North of Perth. | Photo: Jo Nova

Weekend Unthreaded (with 200,000 mile chasm of fire on the sun)

Photograph by NASA/SDO

Read about it, and watch the video below:

[...]

Weekend Unthreaded

A favourite rock pool of mine. My photo.

 

 

Weekend Unthreaded

For all those other ideas…

Weekend Unthreaded

Weekend Unthreaded

Weekend Unthreaded

We could discuss that 95%-certain sermon from yon IPCC…

Saturday Unthreaded

For James…

Our daily big-government bread (Unthreaded)

 

 

Our taxpayers give us this day our daily bread,

and forgive us our debts,

as we also have forgiven our debt to our largely free university education,

and lead us not into skeptic temptation but deliver us from evil.

 

Written by Maverick on the site.

 

 

Yes, this is the unthreaded thread this weekend…

Weekend Unthreaded

Two weeks to go…