NASA

While evidence for this microbial life is yet to have been found, a new NASA study from a group of scientists proposes that these microbes can survive beneath frozen water ice on the Martian surface.

More specifically, the team suggests that the amount of sunlight that would shine through the water ice and into shallow pools under the ice would be enough for any microbes to perform photosynthesis. The team utilized computer modeling to make their proposal, and pools of water similar to these Martian pools have been found on Earth to contain algae, fungi, and microscopic cyanobacteria — all of which perform photosynthesis.

Around 83 percent of NASA's facilities are beyond their design lifetimes, and the agency has a $3.3 billion backlog in maintenance. When you consider NASA's $250 million estimate for normal year-to-year maintenance, it would take a $600 million uptick in NASA's annual budget for infrastructure repairs to catch up on the backlog within the next 10 years.

"Worst" in terms of being overdue for repairs, not that they don't produce great work.

Teams completed ground hot fire testing at White Sands and are working to evaluate the test data and inspect the test engine. The ongoing ground analysis is expected to continue throughout the week. Working with a reaction control system thruster built for a future Starliner spacecraft, ground teams fired the engine through similar inflight conditions the spacecraft experienced on the way to the space station. The ground tests also included stress-case firings, and replicated conditions Starliner’s thrusters will experience from undocking to deorbit burn, where the thrusters will fire to slow Starliner’s speed to bring it out of orbit for landing in the southwestern United States.

Integrated ground teams also are preparing for an in-depth Agency Flight Test Readiness Review, which will evaluate data related to the spacecraft’s propulsion system performance before its return to Earth. The date of the agency review has not yet been solidified.

The delayed spacewalk is only the latest in a string of setbacks around operations on the International Space Station in recent weeks.

This marks the second spacewalk in recent days that has been abruptly called off due to spacesuit issues.

In addition to the aborted Monday spacewalk, the federal agency has been aiming to carry out another on July 2 — before giving Boeing’s Starliner capsule the green light to undock from the orbiting laboratory and make its return home.

The Starliner spacecraft has been on its first crewed test flight to the space station. But the vehicle encountered several key issues during the first leg of its trip, including springing helium leaks and experiencing thruster outages, that have delayed its return.