The 53-year-old Soviet lander Kosmos 482, which is tumbling back to Earth, appears to be trailing a parachute based on new images analyzed by satellite trackers.
Kosmos 482, part of the former U.S.S.R.'s Venera program, split in two after a malfunction in the rocket in 1972, with the main body crashing back to Earth in 1981 and the lander remaining in orbit.
The Dutch astronomer Ralf Vandebergh noted a structure connected to the capsule in the images, suggesting it could be a parachute, although it is still speculative.
The 1,091-pound lander, designed for Venus but likely to return to Earth intact, is expected to experience reentry at approximately 150 mph, potentially burning up the suspected parachute.