The most well-known contact binary is probably Selam, the little moonlet accompanying the near-Earth asteroid Dinkinesh, which sits between the orbits of Mars and Jupiter. Discovered earlier this year ...
The presolar nebula that would one day become the solar system condensed out of one such fragment over about 100,000 years. What does a presolar nebula look like? Something like this. The Hubble space ...
If microscopic black holes born a fraction of a second after the Big Bang exist, as some researchers suspect, then at least one may fly through the solar system per decade, generating tiny ...