During the Expedition 59 mission to the International Space Station, astronauts are doing a series of three spacewalks.
On March 22, 2019, NASA astronauts Anne McClain and Nick Hague took a spacewalk to replace some aging nickel-hydrogen batteries with new lithium-ion batteries. One week later on March 29, Hague and NASA astronaut Christina Koch did similar work on their spacewalk together, replacing a second set batteries.
The third spacewalk of Expedition 59 will take place on April 8, when McClain and Canadian Space Agency astronaut David Saint-Jacques will work to establish a redundant power supply to the Canadarm2 robotic arm and upgrade the station's wireless networks.
See photos of the astronauts working in space in this gallery! We'll update this gallery with the latest spacewalk photos once the astronauts beam more of them down to Earth.
NASA astronaut Nick Hague is pictured inside the Quest airlock at the beginning of his first spacewalk on March 22, 2019.
NASA astronaut Anne McClain takes an out-of-this-world selfie during her first spacewalk on March 22, 2019.
Related: The Best Astronaut Selfies in Space
NASA astronaut Nick Hague also took a selfie during that first spacewalk, but he had his sun visor down. You can see the reflection of his camera on his helmet.
NASA astronaut Anne McClain waves for the camera during her first spacewalk on March 22, 2019.
NASA astronaut Anne McClain works on the International Space Station's P4 truss during her first spacewalk on March 22, 2019.
NASA astronaut Anne McClain works on the International Space Station's P4 truss during her first spacewalk on March 22, 2019.
NASA astronaut Anne McClain works in the dark as the International Space Station orbits over the nighttime side of Earth on March 22, 2019. Thankfully, her spacesuit has its own set of lights.
NASA astronaut Nick Hague dangles from the International Space Station during his spacewalk with Anne McClain on March 22, 2019.
NASA astronauts Nick Hague (left) and Anne McClain work to install new batteries at the International Space Station's P4 truss segment on March 22, 2019. McClain was designated "EV-1," which meant that she got to wear the suit with red stripes. Hague was "EV-2" and wore a plain white suit.
The International Space Station's solar arrays glow in the sunlight as NASA astronauts Anne McClain and Nick Hague retrieve supplies from the HTV-7 external palette.
This view of spacewalker Anne McClain shows how enormous the space station's solar panels are compared to a human being.
NASA astronaut Nick Hague floats freely in microgravity while working on power upgrade at the International Space Station on March 22, 2019. (Don't worry — he is tethered to the station!)
NASA astronaut Anne McClain looks delighted to be working in space in this photo taken shortly after the start of her very first spacewalk on March 22, 2019.
NASA astronaut Christina Koch took her first spacewalk on March 29, 2019, together with Nick Hague. If you look closely, you can see Hague's legs dangling behind Koch. During this spacewalk, Hague wore the suit with the red stripes, and Koch wore the plain white suit.
NASA astronauts Christina Koch and Nick Hague work together to install new batteries at the P4 truss of the International Space Station on March 29, 2019.
One of the space station's external cameras captured this beautiful view of Earth as NASA astronaut Christina Koch grabbed some supplies from the Quest airlock at the beginning of her first spacewalk on March 29, 2019.