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SpaceX has announced March 6 for the launch of its 20^th contracted cargo mission to the International Space Station. Its Dragon resupply ship will arrive March 9 with over 5,600 pounds of science hardware, research samples and supplies to the Expedition 62 crew.

Meanwhile, NASA Flight Engineers Jessica Meir and Andrew Morgan are tending to a new experiment, which was delivered early last week aboard Northrop Grumman’s Cygnus cargo craft. The astronauts are exploring the differences between bone cells exposed to microgravity versus samples magnetically levitated on Earth.

Doctors will use the comparisons to gain a deeper understanding of bone diseases. Space-caused bone loss is similar to the symptoms of Earth-bound conditions such as osteoporosis. Astronauts exercise daily keeping track of their diet to counteract the effects of microgravity and maintain healthy bones and muscles.

Meir and Morgan continue to unpack the over three tons of cargo shipped aboard Cygnus one week ago. The duo transferred powered payloads including science freezers containing research samples and tanks filled with nitrogen and oxygen to replenish the station’s atmosphere.

Commander Oleg Skripochka of Roscosmos was back on space physics research this morning observing the behavior of heavily charged particles, or plasma crystals. The three-time station resident also serviced life support gear before collecting measurements from Russian radiation detectors.

The Expedition 62 crew spent Monday on a variety of human research activities while also exploring Earth from the vantage point of the International Space Station.

NASA is studying how astronauts’ bodies adapt to living and working in space as mission managers plan longer human missions to the Moon, Mars and beyond. The long-running Fluid Shifts investigation is observing the impact of pressure on the brain and eyes due to the upward flow of body fluids caused by weightlessness.

Flight Engineers Jessica Meir and Andrew Morgan spent Monday morning collecting their blood, saliva and urine samples for the biomedical study. They spun the samples in a centrifuge before stowing them in a science freezer for analysis on Earth.

The duo then split up as Meir serviced cell samples for a bone study, while Morgan checked on samples being observed for a bio-fuel experiment. They got back together at the end of the day for eye exams as part of the Ocular Health study.

Station Commander Oleg Skripochka, a veteran of two prior station missions, juggled a wide array of space research. He first studied heavily charged particles, or plasma crystals, before setting up Earth observation gear to be remotely controlled by students on the ground. Next, Skripochka split his time on a pair of Earth studies seeking ways to monitor conditions and forecast natural and man-made disasters.

New bone research kicked off on the International Space Station today to improve human health on and off the Earth. The Expedition 62 crew also practiced an emergency simulation with ground controllers.

Living in space causes bone loss and scientists are studying ways to offset the negative effects to ensure long-term mission success. Results from the new OsteoOmics-02 study aboard the orbiting lab also have implications bone diseases on Earth.

NASA astronauts Jessica Meir and Andrew Morgan spent Thursday morning setting up the bone experiment hardware for operations in the Life Sciences Glovebox. Doctors will be observing the mechanisms of rapid bone loss in microgravity and extend that knowledge to learn more about osteoporosis on Earth.

The duo then joined Commander Oleg Skripochka of Roscosmos in the afternoon and practiced their emergency response training. The three crewmates coordinated their communication, roles and responsibilities with mission controllers in Houston and Moscow. In the unlikely event of a fire, chemical leak or pressure leak, the crew would need to locate safety gear, close module hatches and possibly evacuate the station aboard a Soyuz crew ship.

Before the training session, Skripochka spent the morning on an experiment exploring how long-term spaceflight impacts the professionalism of a crewmember. Results will help Russian scientists understand how a cosmonaut will react to different phases of a mission such as docking to another spacecraft or landing on another planet.

The Cygnus space freighter is open for business at the Unity module where it will stay for the next three months. The Expedition 62 crew has begun unloading over three tons of science, supplies and station hardware delivered Tuesday to replenish the orbital lab.

NASA astronauts Jessica Meir and Andrew Morgan opened Cygnus’ hatch a few hours after its capture and installation Tuesday morning. Afterward, the duo entered the vehicle and began unpacking and setting up over a ton of new science new experiments. The critical research is being stowed in station science freezers, activated in research racks and readied for upcoming operations.

Meir removed science freezers containing research samples from Cygnus and installed them in EXPRESS racks aboard the station. She also began reviewing operations for the just-delivered OsteOmics-02 study to prevent bone loss on Earth and in space.

Morgan retrieved a variety of research hardware from Cygnus and began integrating and activating them in station systems. The new Mobile SpaceLab, a tissue and cell culturing facility, was installed and powered up on an EXPRESS rack.

In the afternoon, the NASA Flight Engineers joined Commander Oleg Skripochka of Roscosmos to review emergency procedures. The trio went over the steps they would take in the unlikely event of a fire, pressure leak or ammonia leak aboard the station. The veteran cosmonaut spent the majority of Wednesday on the upkeep of Russian lab systems.

During the crew’s lunchtime a series of nine nanosatellites were deployed outside Japan’s Kibo laboratory module. They will each study different phenomena such as X-rays from distant pulsars, atmospheric and natural events and the effects of space radiation on hardware.

After its capture this morning at 4:05 a.m. EST, the Northrop Grumman Cygnus spacecraft was bolted into place on the International Space Station’s

Earth-facing port of the Unity module at 6:16 a.m. At the time of installation, the space station was flying over south of New Zealand.

The spacecraft’s arrival brings more than 7,500 pounds of research and supplies to space station. Here are some of the scientific investigations:

Better Tissue and Cell Culturing in Space

Mobile SpaceLab, a tissue and cell culturing facility, offers investigators a quick-turnaround platform to perform sophisticated microgravity biology experiments. Such experiments are critical for determining how microgravity affects human physiology and identifying ways to mitigate negative effects. The platform can work in multiple configurations, allowing investigators to tailor the facility to their needs.

Mochii

The Mochii investigation provides an initial demonstration of a new miniature scanning electron microscope (SEM) with spectroscopy. Mochii will demonstrate real-time, on-site imaging and measurements of micro- and nanostructures aboard the space station. This capability could accelerate answers to many scientific inquiries and mission decisions and serve the public as a powerful and unique microgravity research platform.

Examining Bone Loss in Microgravity

Crew members experience bone loss in orbit, stemming from the lack of gravity acting on their bones. OsteoOmics investigates the molecular mechanisms that dictate this bone loss by examining osteoblasts, cells in the body that form bone, and osteoclasts, which dissolve bone. A better understanding of these mechanisms could lead to more effective prevention of astronaut bone loss during space missions.

Fighting Bacteria with Phages

Phage Evolution examines the effects of microgravity and radiation exposure on phage and bacterial host interactions, including phage specificity for a bacterial host and host resistance to specific phages. A better understanding of the effects of microgravity and cosmic radiation on bacteriophages and hosts could result in significant developments for phage technology, ultimately helping protect the health of astronauts on future missions.

(Do Not) Light My Fire

The Spacecraft Fire Experiment-IV (Saffire-IV) investigation examines fire development and growth in different materials and environmental conditions, fire detection and monitoring, and post-fire cleanup capabilities. It is part of a series of fire investigations conducted in the Cygnus resupply vehicle after its departure from space station, eliminating exposure of humans or occupied spacecraft to fire danger.

The Cygnus NG CRS-13 spacecraft for this space station resupply mission is named in honor of U.S. Air Force Maj. Robert Lawrence, the first African American astronaut selected by any program, specifically chosen for the Air Force’s Manned Orbital Laboratory Program in June 1967. Lawrence died in an F-104 Starfighter aircraft accident at Edwards Air Force Base, California six months later at the age of 32.

This is the second time two Cygnus spacecraft will be in flight at the same time, as the NG-12 vehicle remains in orbit after departing from the station on Jan. 31.

Learn more about space station activities by following @space_station and @ISS_Research on Twitter as well as the ISS Facebook and ISS Instagram accounts.