This is a picture of the lightest substance on Earth

Scientists have just unveiled the lightest human-made substance on Earth. How light are we talking? Let's put it this way: it's less dense than helium. » 3/28/13 12:07pm 3/28/13 12:07pm

This is Aerographite, the lightest material ever created

Last November, we told you about a metallic microlattice that was light enough to rest on the seed heads of a dandelion. At the time, it had just supplanted NASA's aerogel as the lightest material on Earth by a mere tenth of a milligram per cubic centimeter (the former has a density of just .9 mg/cm3; the latter an… » 7/13/12 5:30pm 7/13/12 5:30pm