Next stop, Mars
Sarah Kaplan 1 day ago
1/4 SLIDES © NASA/JPL-Caltech/NASA/JPL-Caltech -( See x 4 slides )
This January 10, 2017 artist rendering depicts NASA's Mars 2020 rover, with its robotic arm extended. (NASA/JPL-Caltech)
LOS ANGELES —In three years, a new explorer will touch down on the Red Planet. Wheels churning, machinery whirring, the rover will amble across the rusty terrain, looking for rocks to send back to Earth — rocks that could prove there once was life on Mars.
It is the first time in history scientists have had a real shot at addressing one of humanity’s deepest questions: Are we alone?
But first, they must decide where to look.
There are three options: a former hot spring NASA has visited once before, a dried-up river delta that fed into a crater lake, and a network of ancient mesas that may have hidden layers of underground water.
In the coming week, after decades of dreaming, years of research and a heated three-day debate at a workshop in Los Angeles last month, NASA’s top science official will choose which spot to explore. The site he selects will set the stage on which generations of scientists probe the mysteries of our existence.
This rover, scheduled to launch in 2020, is just the first phase of a multibillion-dollar, four-step sample return process. To put pieces of Mars in the hands of scientists will require a lander to retrieve the samples; a probe to bring them home; and then an ultra-secure storage facility that will keep Earth life from contaminating the Mars rocks — and vice versa.
Yet the discovery of fossils in those samples could illuminate the origins of life here on Earth. It could hint at whether someone else is still out there, waiting to be found.
“I want to know,” said Matt Golombek, a NASA scientist charged with guiding the search for a landing site. “Don’t you? I want to know what’s there. I want to know how big an accident we are.”
That hunger for knowledge is what drew hundreds of people to the recent workshop — veteran space explorers and aspiring PhDs, an 18-year-old college freshman and an 80-year-old retired accountant — to assess which plan was best. For days they debated, fueled by curiosity and weak coffee, conscious that the outcome of their meeting could influence NASA and shape history, acutely aware of what they still didn’t know.
So much about Mars remains a mystery. The very notion of alien life is barely more than an educated guess buoyed by wild hope.
They are hopeful.
A search on a failed planet