A NASA rover on Mars is tackling a new challenge and climbing to the rim of a crater. The rover called Perseverance started the steep climb Tuesday. It has spent the last 3 1/2 years exploring the bottom of the crater where it landed in 2021. So far, it has collected 22 rock core samples and will pick up more from the top of the crater. The samples may help scientists piece together what the red planet’s climate looked like billions of years ago. The rover will scale rocky terrain and slopes of up to 23 degrees on the monthslong journey.
