A little bit of asteroid works out to $132 million per ounce — pricy! — but not quite the most expensive material used in science. I’m a professor of astronomy. I use Moon and Mars rocks in my ...

I use moon and Mars rocks in my teaching and have a modest collection of meteorites. I marvel at the fact that I can hold in my hand something that is billions of years old from billions of miles away ...

Some items carry a price so steep that gold barely registers beside them. These materials come from unusual places: deep geological layers, rare biological sources, and in a few cases, far beyond our ...

NASA's OSIRIS REx mission cost $1.16 billion for just under 9 ounces of asteroid dust. But it's hardly the most expensive material in science. Here's where it ranks. When you purchase through links on ...

Chris Impey receives funding from the National Science Foundation. I’m a professor of astronomy. I use Moon and Mars rocks in my teaching and have a modest collection of meteorites. I marvel at the ...