Scientists criticise Nasa for scaling back mission to explore beyond Pluto

Anger at decision to axe the main task of the New Horizons spacecraft to probe the remote Kuiper belt

It may have reached the edge of the solar system and travelled more than 5 billion miles through space, but the New Horizons spacecraft is causing major ripples on Earth. A dispute has erupted between scientists and US space officials in the wake of Nasa's decision to stop funding next year for the vessel's main mission.

The move was described as misguided and unfortunate" by Alan Stern, New Horizons's principal investigator.