RT @RonBaalke: On this day in 2003, Mike Brown, Trujillo & Rabinowitz discovered Sedna – a near certain Dwarf Planet.
@plutokiller https://t.co/gUNxhTJX3y
RT @RonBaalke: On this day in 2003, Mike Brown, Trujillo & Rabinowitz discovered Sedna – a near certain Dwarf Planet.
@plutokiller https://t.co/gUNxhTJX3y