Many Americans recognize the unsurpassed science and inspiration that have come from the Hubble Space Telescope over the past two decades, as well as from its less famous sister satellites like the Chandra X-ray Observatory, the Spitzer Space (Infrared) Telescope and the Fermi gamma-ray observatory.

CNN: Space is still the new frontier

While there are sites like eBay where such sales are popular, Poshmark simplifies the process, says Chandra, who previously was founder and CEO of Kaboodle, which was acquired by Hearst Corp in 2007.

FORBES: Poshmark Style App Turns Closets Into Marketplaces