Mars Rover finds shiny piece of foil on a rock!


NASA’s Perseverance rover spotted something that was not like the others on Mars. On June 13, Percy snapped a photo of a rock that had a strange-looking object stuck on it.

The object is a piece of foil with dots visible all across it. “My team has spotted something unexpected: It’s a piece of a thermal blanket that they think may have come from my descent stage, the rocket-powered jet pack that set me down on landing day back in 2021,” the rover team tweeted on Wednesday.

NASA JPL spokesperson Andrew Good told CNET the piece is definitely from a thermal blanket. “Less definite is which part of the spacecraft it came from – the team thinks the descent stage is a good possibility – or how exactly it got here (descent stage crashed two kilometers away; whether it landed here after that crash or was blown by the wind isn’t something we know)…”

Or…it may have been dropped by someone saving it originally to wrap up a wornout piece of chewing gum before throwing it away. That’s what our mother always told us to do. Save the gum wrapper just for that purpose.

Japan goes deeper for new electricity source

Test unit retrieved after three years 50 meters underwater

Renewable energy potential is not distributed evenly. Japan, for example, has sub-par solar potential and nowhere near the wind potential of Western Europe or the United States. It’s also currently ranked fifth in the world for electricity consumption, and adding nuclear power will be politically difficult in the wake of Fukushima, meaning that its race to zero emissions will require more innovation than most if it wishes to maintain energy independence.

Tidal flow generators – like the 2-MW Orbital O2 currently exporting power to the grid off Scotland’s Orkney islands – might offer reliable base load generation, but Japan sees so much shipping traffic through areas with suitable tidal potential that the idea’s unlikely to work.

So instead, Japanese company IHI and the New Energy and Industrial Technology Development Organisation (NEDO) have been experimenting with another reliable source of energy that could potentially deliver exceptionally reliable energy if tapped: ocean currents.

…There’s potential there to hook up vast arrays of ocean current turbines, sharing transmission lines, and siphon off a portion of an energy source IHI estimates at around 205 gigawatts. IHI and NEDO have been working on this opportunity since 2011, and since 2017, the companies have had a small-scale 100-kilowatt tidal generator in testing.

And everything appears to be working as hoped for. RTFA for the happy details.