NASA said Friday it is now targeting February 2022 for the uncrewed lunar mission Artemis 1, the first step in America's plan to return humans to the Moon later this decade.

The space agency had initially wanted to launch the test flight by the end of this year, with astronauts on the ground by 2024 on Artemis 3, but the timeline has slipped back.

It achieved a major milestone Wednesday when it stacked the Orion crew capsule atop its Space Launch System megarocket, which now stands 322 feet (98 meters) tall inside the Vehicle Assembly Building at NASA Kennedy Space Center in Florida.

After further tests, it will be wheeled out to the launch pad for a final test known as the "wet dress rehearsal" in January, with the first window for launch opening in February, officials told reporters on a call.

NASA has completed stacking of the agency's mega-Moon rocket and spacecraft that will launch the next generation of deep space operations, including Artemis missions on and around the Moon. Engineers and technicians successfully secured the Orion spacecraft atop the fully assembled Space Launch System (SLS) rocket at the agency's Kennedy Space Center in Florida just before midnight Oct.

University of California San Diego Physics Professor Tom Murphy is among five authors of an essay, appearing in the November 2021 issue of the journal Energy Research & Social Science, that cautions current levels of worldwide economic growth, energy use and resource consumption will overshoot Earth's finite limits.

The essay, "Modernity is Incompatible with Planetary Limits: Developing a PLAN for the Future," also announces the establishment of a network of scholars and researchers to promote the understanding of planetary limits, envision scenarios for humanity to thrive within planetary limits, better educate college students about these challenges and advise government officials and communities in developing effective responses.

"We all are a product of our times, where 'new,' 'shiny,' 'better' seem normal and 'more, more, more' seems good, but that is a reflection of the abnormal period of the last century or so," said Murphy. "If humanity keeps growing its impact on the planet, we will overshoot planetary limits, so we need to plan to power down while there's still time. Even the founders of economics recognized that Earth's resources are finite and growth is but a transient phase.

Space scientists from the University of Leicester have delivered a key component for a new mission to study the impact of the solar wind on Earth's magnetic field.

Engineers from the University's Space Research Centre have completed the structural and thermal model for the UK's latest X-ray telescope, the Soft X-ray Imager (SXI), destined for space aboard the SMILE (Solar wind Magnetosphere Ionosphere Link Explorer) probe when it launches at the end of 2024.

The model, which has now been delivered to Airbus in Spain for integration and testing within the prototype satellite system, is not the so-called flight model—but will help engineers understand the extreme requirements for the final design.

The students gathered at the Museum of Flight in Seattle were ready to ask Megan McArthur questions, via video link, about life as an astronaut. She was about as far away as Walla Walla—but in outer space.

McArthur is a NASA astronaut aboard the International Space Station, moving above the Earth at more than 17,500 mph, orbiting every 90 minutes.

Just before the video connection was made for the Saturday event, former astronaut Dottie Metcalf-Lindenburger, an astronaut from 2004 to 2014, spoke about life aboard the space station and was asked, of course, everyone's favorite question: How do you go to the bathroom in space?

The answer: There are spacesuit hookups and funnels and toilets. Nothing floats free.

She was asked about the space station's size, and replied that it was a surprise to her how large it was. It's about the size of a soccer field, and the crew quarters—seven astronauts are currently at the station—are about the size of the interior of a Boeing 747 jumbo jet.

Then from space came a question: "Dottie, can you read me?"