Our Cosmos is a Spacecraft Graveyard

While it’s common to think of the universe as dark, mysterious and infinite, it’s less often that we consider all the human-made space junk floating around nearby. The cosmos is a graveyard of spacecraft—each with its own story. These defunct vessels “glide silently in Earth’s vicinity” with “their mission to chronicle the wonders of the universe long ended.” The Kepler, for instance, trails our planet since running …

Link About It: This Week’s Picks

The planet's oldest asteroid crater, Pigalle basketball court's revamp, moon cars, musical archives and more

Earth’s Oldest Asteroid Impact is Two Billion Years Old The oldest asteroid collision on the planet, the Yarrabubba impact crater in Western Australia, is a whopping 2.229 billion years old. After analyzing minerals at the crater site, researchers have found the asteroid hit at the end of an era called Snowball Earth (one of the planet’s ice ages). Scientists, led by Dr Timmons Erickson (a …

Earth’s Oldest Asteroid Impact is Two Billion Years Old

The oldest asteroid collision on the planet, the Yarrabubba impact crater in Western Australia, is a whopping 2.229 billion years old. After analyzing minerals at the crater site, researchers have found the asteroid hit at the end of an era called Snowball Earth (one of the planet’s ice ages). Scientists, led by Dr Timmons Erickson (a geochronologist at Houston’s NASA Johnson Space Center), studied around …