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Berlin, Germany (SPX) Sep 16, 2024
Recent gravity data from Mars have revealed dense, large-scale features hidden beneath the sediment of a once-extant ocean. The findings, which combine models and data from multiple Mars missions, also suggest that active processes within the planet's mantle could be driving the growth of Olympus Mons, the largest volcano in the Solar System. These insights were presented at the Europlanet Scien
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Melbourne, Australia (SPX) Sep 16, 2024
Two astronauts have carried out the first-ever commercial spacewalk, using new less-bulky spacesuits designed by SpaceX. Tech billionaire Jared Isaacman (who also funded the mission) and SpaceX engineer Sarah Gillis together spent almost half an hour outside their spacecraft at an altitude of some 700 km, further from Earth than any human since the Apollo Moon landings. The brief jau
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Washington (AFP) Sept 15, 2024
The SpaceX Polaris Dawn mission, which made history when its crew conducted the first spacewalk by non-government astronauts, concluded early Sunday with a splashdown off the coast of Florida. The Dragon spacecraft plunged into the ocean at 3:37 am (0737 GMT), a webcast of the arrival showed, with a recovery team deploying in the pre-dawn darkness to retrieve the capsule and crew. The ca
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New video shows how tiny spacecraft will "swarm" Proxima Centauri
Screenshot of the animation showing the Swarming Proxima Centauri approaching Proxima b. Credit: i4is/Interstellar Initiatives

Earlier this year, NASA selected a rather interesting proposal for Phase I development as part of their NASA Innovative Advanced Concepts (NIAC) program. It's known as Swarming Proxima Centauri, a collaborative effort between Space Initiatives Inc. and the Initiative for Interstellar Studies (i4is) led by Space Initiative's chief scientist, Marshall Eubanks.

The concept was recently selected for Phase I development as part of this year's NASA Innovative Advanced Concepts (NIAC) program.

Similar to other proposals involving gram-scale spacecraft and lightsails, the "swarming" concept involves accelerating tiny spacecraft with a laser array to up to 20% the speed of light. This past week, on the last day of the 2024 NASA Innovative Advanced Concepts (NIAC) Symposium, Eubanks and his colleagues presented an animation illustrating what this mission will look like.

The video and their presentation provide tantalizing clues as to what scientists expect to find in the closest star system to our own.

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NASA's Artemis II crew uses Iceland terrain for lunar training
NASA astronaut and Artemis II mission specialist Christina Koch stands in the desolate landscape of Iceland during a geology field training course. Credit: NASA/Robert Markowitz

Black and gray sediment stretches as far as the eye can see. Boulders sit on top of ground devoid of vegetation. Humans appear almost miniature in scale against a swath of shadowy mountains. At first glance, it seems a perfect scene from an excursion on the moon's surface … except the people are in hiking gear, not spacesuits.

Iceland has served as a lunar stand-in for training NASA astronauts since the days of the Apollo missions, and this summer the Artemis II crew took its place in that long history. NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen, along with their backups, NASA astronaut Andre Douglas and CSA astronaut Jenni Gibbons, joined geology experts for field training on the Nordic island.

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UCF Space Medicine Expert: Polaris Dawn brings new areas of research, medical care
This week's Polaris Dawn launch and civilian spacewalk provide new opportunities for space medicine research, says UCF's Dr. Emmanuel Urquieta. Credit: Polaris Program/John Kraus.

The launch of Polaris Dawn from Kennedy Space Center includes the first civilian commercial spacewalk and other factors that will be firsts for space medicine research. And that's why Emmanuel Urquieta, an internationally recognized space medicine expert who recently joined UCF's College of Medicine, is especially excited about this latest mission.

The spacecraft is flying up to 870 miles above Earth—the highest orbit flown in the last half century. And at that altitude, the astronauts will be exposed to higher radiation than most astronauts who stay in low Earth orbit, such as those onboard the International Space Station.

After achieving the high orbit, Polaris Dawn will come down to a lower altitude for the spacewalk.

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