After adjusting to microgravity—and getting through a few bouts of vomiting—the astronauts got to work in polar orbit.

The first astronauts to enter a polar orbit chose the obvious animal to serve as their zero-g indicator: a plush polar bear. The doll also has an emperor penguin embroidered on its chest.

Hello, Antarctica. Unlike previously anticipated, from 460 km above, it is only pure white, no human activity is visible.”

The four-person crew, led by cryptocurrency billionaire Chun Wang, will spend three to five days on a rare flight path around Earth’s poles.

The SpaceX passengers, a Chinese bitcoin investor and three explorers, will be on the historic flight for 3 1/2 days.

The Fram2 crew are the first humans ever to orbit Earth’s polar regions from space as they conduct various experiments, like doing the first x-rays in space.

The three satellites, designated Kosmos 2581, 2582 and 2583, launched on a Soyuz-2.1V rocket from Plesetsk cosmodrome early on Feb. 2 (GMT). Since then, the satellites, whose purpose is unknown, have displayed interesting behavior, while in a near-polar orbit roughly 364 miles (585 kilometers) above Earth.

SpaceX’s Fram2 mission is set for liftoff on Monday at 9:46 p.m. ET, launching from NASA’s Kennedy Space Center in Florida. The mission will launch a private crew of astronauts on board a Dragon spacecraft, where they will spend three to five days admiring our planet from a unique polar orbit.