We Hate Long Goodbyes, But Opportunity has Earned One

NASA’s Opportunity rover has reached the end of its life. Initially designed to last 90 days, and to travel only 1000 meters (1100 yards), the rover spent almost 15 years exploring the surface of Mars. During that time, it travelled more than 45 kilometers (28 miles.) The last signal from Opportunity was on June 10th, …