Pluto is covered in huge red patches and we don't know what they are

Tantalizing Pluto views suggest active surface but won't be seen again for 161 years

NASA's New Horizons Pluto spacecraft is still exploring, 50 AU from the sun

1I/'Oumuamua as an N2 ice fragment of an exo-pluto surface. II. Generation of N2 ice fragments and the origin of 'Oumuamua