December comet brings back Rosetta memories

December comet brings back Rosetta memories

A special visitor is crossing the sky: Comet 46P/Wirtanen, sighted with telescopes and binoculars in recent weeks, is on the way to its closest approach to Earth this weekend, when it might become visible to the naked eye. A bright comet with a period of 5.5 years, 46P had been chosen in the 1990s as the target of ESA’s Rosetta mission. “When we began to study Rosetta, one of the most important tasks was to…

Read More