New challenges for mountain climbers

In 1953, Edmund Hillary & Tenzing Norgay made it to the top of Mount Everest, the tallest mountain (above sea level) on Earth. Sometime in the future, I think we'll have someone climbing the Tallest Mountain on a Planet in the Solar System, Olympus Mons, on the planet Mars. It has a height of nearly 22 km, almost 3 times as tall as Mount Everest's height above sea level.

Then there's Rheasilvia on the asteroid 4 Vesta, an impact crater with a central mound, almost 200 kilometres in diameter, which rises 22 kilometres from its base, the tallest mountain known in the Solar System.