RT @cosmos4u: Newly discovered 2013 BC18 from minorplanetcenter.net/mpec/K13/K13B3… *may* be a (former?) comet – and the orbit comes close to Earths -> …
RT @cosmos4u: Newly discovered 2013 BC18 from minorplanetcenter.net/mpec/K13/K13B3… *may* be a (former?) comet – and the orbit comes close to Earths -> …