Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more . CNN  —  A Soviet-era spacecraft that was designed to make a soft landing on Venus — but instead remained trapped in Earth orbit for decades — is slated to fall from the sky Friday night or early Saturday, according to the latest estimates from experts. The object, referred to as Cosmos 482 or Kosmos 482, is believed to be a capsule launched by the