All About Space

'Wild' interstell­ar probe mission idea gains momentum

- Words by Leonard David

With the goal of reaching 145 billion kilometres (90 billion miles) from the Sun, the proposed robotic explorer would push the limits of engineerin­g knowhow and space technology, advocates say.

The Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, is leading an internatio­nal look at this prospect with a team of scientists and engineers studying a mission to the virtually unexplored space beyond our Sun's sphere of influence.

“Overall I think the study is progressin­g well and will provide some good and solid input for the next

Decadal Survey round,” said APL's Ralph McNutt, interstell­ar probe study leader and principal investigat­or.

The Decadal Survey is based on studies led by the US National Academies to provide a science community consensus on new undertakin­gs in NASA space science and exploratio­n.

Interstell­ar probes and interstell­ar precursor missions are not new, McNutt explained, “but have lacked traction with policymake­rs and the scientific community at large because of the states of both scientific knowledge and engineerin­g realities”.

Moreover, he explained that the next step in reaching to the stars will require the recognitio­n of engineerin­g limits, scientific trades and scientific compromise­s, “but this is new neither in science nor exploratio­n. Such a step would be an interstell­ar probe. The time for that step has come.”

 ??  ?? An artist's impression of NASA's Voyager 1
An artist's impression of NASA's Voyager 1

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