Universe Today

May 31, 2023May 31, 2023 by Brian Koberlein

There's a New Supernova in a Familiar Galaxy. You Can See it in a Small Telescope

A new supernova in M101. Credit: Craig Stocks

The Pinwheel Galaxy, also known as M101, is a spiral galaxy just 21 million light years away. It’s a popular galaxy for photographs because it’s oriented to us face-on. This means you can see the bright whorled spirals and dark cloud regions, even in amateur photographs. Since it’s relatively close and bright, you can get a good view of it, even with a small telescope. It also happens to have a supernova at the moment.

May 31, 2023May 31, 2023 by Andy Tomaswick

Robots in orbit are becoming even more popular. There are still many technical challenges ahead.

The robotic Canadarm during STS-72, as Space Shuttle Endeavour mission in 1996. Image: By NASA - https://archive.org/details/STS072-722-041, Public Domain, https://commons.wikimedia.org/w/index.php?curid=29803999

Robots will be one of the keys to the expanding in-space economy. As launch costs decrease, hopefully significantly when Starship and other massive lift systems come online, the most significant barrier to entry for the space economy will finally come down. So what happens then? Two acronyms have been popping up in the literature with increasing frequency – in-space servicing, assembly, and manufacturing (ISAM) and On-orbit servicing (OOS). Over a series of articles, we’ll look at some papers detailing what those acronyms mean and where they might be going shortly. First, we’ll examine how robots fit into the equation.

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May 31, 2023May 31, 2023 by Nancy Atkinson

NASA's Mars Helicopter Went Silent for Six Agonizing Days

The Ingenuity helicopter photographed by the Perseverance rover. Credit: NASA/JPL-Caltech

NASA’s Ingenuity helicopter on Mars has exceeded everyone’s expectations, recently completing its 51st flight when it was supposed to fly just a few times as a demonstration mission. But flights 50 and 51 almost didn’t happen.

In a recent blog post, Travis Brown, Chief Engineer for Ingenuity shared how the team lost contact with the tiny rotorcraft for six excruciating days.

May 31, 2023May 31, 2023 by Laurence Tognetti

A Third of Planets Orbiting Red Dwarf Stars Could be in the Habitable Zone

A recent study published in the Proceedings of the National Academy of Sciences, a pair of researchers from the University of Florida (UF) examine orbital eccentricities for exoplanets orbiting red dwarf (M dwarf) stars and determined that one-third of them—which encompass hundreds of millions throughout the Milky Way—could exist within their star’s habitable zone (HZ), which is that approximate distance from their star where liquid water can exist on the surface. The researchers determined the remaining two-thirds of exoplanets orbiting red dwarfs are too hot for liquid water to exist on their surfaces due to tidal extremes, resulting in a sterilization of the planetary surface.

May 30, 2023May 30, 2023 by Evan Gough

This is How NASA Wanted to Rescue Space Shuttle Astronauts

A NASA astronaut holds the Personal Rescue Enclosure in this photo. By NASA - Kenneth S. Thomas, Harold J. McMann: U. S. Spacesuits. 2nd edition. Springer, 2012, ISBN 978-1-4419-9566-7, p. 38, doi:10.1007/978-1-4419-9566-7_4., Public Domain, https://commons.wikimedia.org/w/index.php?curid=64033886

For most of us, this would be a nightmare.

Imagine being curled up inside a 90 cm (36 inch) fabric sphere with a small window and a small air tank while dangling from the Canadarm. As your tiny sphere shifts, you’d see Earth out your tiny window, then the Space Shuttle, damaged by some accident or other that caused you to need rescuing, then Earth again. Panic would set in pretty quickly.

But that’s where Space Shuttle astronauts in an emergency could’ve found themselves if NASA’s Personal Rescue Enclosure (PRE) had been put into practice.

May 30, 2023May 30, 2023 by Matt Williams

A Sign from Space Simulates What it Would be Like to Get a Message from Aliens!

A Sign in Space is a worldwide artistic project that will inspire a conversation about the possibility of First Contact. Credit: SETI Institute

Someday, humanity might receive a message from space that will answer one of the greatest existential questions: is anybody out there? Regardless of the content, a message from an extraterrestrial civilization will be the single greatest event in human history. How would such an event happen, and how would it play out? What will be the repercussions of billions of people suddenly learning that we are NOT alone in the Universe? This question has inspired countless works of science fiction and scientific studies that have attempted to predict (and even quantify) our collective reaction.

This was the purpose behind A Sign in Space, a revolutionary art project designed to simulate a First Contact scenario. This project was the brainchild of Daniela de Paulis, a contemporary artist, and licensed radio operator currently serving as the Artist in Residence at the SETI Institute and the Green Bank Observatory. Together with a team of international experts, including SETI researchers, space scientists, and artists, de Paulis created this campaign to engage the global SETI community and the general public about the possibility of First Contact.

May 30, 2023May 30, 2023 by Nancy Atkinson

Stratolaunch Buys Virgin Orbit's Rocket-Launching 747

Conceptual rendering of Stratolaunch 747 air-launch vehicle, in launch configuration with the reusable Talon-A hypersonic testbed. Credit: Stratolaunch / Delta Research Digital Products

With Virgin Orbit going through bankruptcy, other launch providers are purchasing various parts of the business. This week we learned that Stratolaunch’s bid to buy Virgin Orbit’s modified Boeing 747 carrier aircraft has been approved by the U.S Bankruptcy Court, enabling Stratolaunch to use the 747 to carry its Talon-A hypersonic vehicles, ideally beginning operation by 2024.

May 30, 2023May 30, 2023 by Carolyn Collins Petersen

HAKUTO-R’s Software Got Confused at the Last Minute, Causing it to Crash into the Moon

LROC narrow-angle-cameras mosaic of the HAKUTO-R Mission 1 Lunar Lander impact site. The blue cross marks the impact site near Atlas crater. Courtesy of NASA/GSFC/Arizona State University — LROC narrow-angle-cameras mosaic of the HAKUTO-R Mission 1 Lunar Lander impact site. The blue cross marks the impact site Courtesy of NASA/GSFC/Arizona State University

On April 26, 2023, people around the world watched as the HAKUTO-R lander made its final approach for a landing on the Moon. It had been “on the road” since December 11, 2022, and completed eight Mission 1 milestones. Numbers 9 and 10 would have been landing and establishing a base on the Moon. As we all know, it reached the lunar surface, but not the way the ispace team expected. NASA images confirmed its final resting place.

May 30, 2023May 30, 2023 by Matt Williams

How Much Damage Will Lunar Landings Do to Lunar Orbiters?

Artist rendering of an Artemis astronaut exploring the Moon’s surface during a future mission. Credit: NASA

Multiple missions are destined for the Moon in this decade. These include robotic and crewed missions conducted by space agencies, commercial space entities, and non-profit organizations. The risks and hazards of going to the Moon are well-documented, thanks to Apollo Program and the six crewed missions it sent to the lunar surface between 1969 and 1972. But unlike the “footprints and flags” of yesterday, the plan for the coming decade is to create a “sustained program of lunar exploration and development.”

This means establishing a greater presence on the Moon, building infrastructure (like habitats, power systems, and landing pads), and missions regularly coming and going. Given the low-gravity environment on the Moon, spacecraft kick up a lot of lunar regolith (aka., “Moon dust”) during takeoff and landing. This regolith is electrostatically-charged, very abrasive, and wreaks havoc on machines and equipment. In a recent study, NASA researchers Philip T. Metzger and James G. Mantovani considered how much damage all this regolith could inflict on orbiting spacecraft.

May 30, 2023May 30, 2023 by Evan Gough

A New Place to Search for Habitable Planets: “The Soot Line.”

Artist impression of a young planet-forming disk illustrating the respective locations of the soot and water-ice lines. Planets born interior to the soot line will be silicate-rich. Planets born interior to the water-ice line, but exterior to the soot line will be silicate and soot-rich (“Sooty Worlds”). Planets born exterior to the water-ice line will be water worlds. Image credit: Ari Gea/SayoStudio.

The habitable zone is the region around a star where planets can maintain liquid water on their surface. It’s axiomatic that planets with liquid water are the best places to look for life, and astronomers focus their search on that zone. As far as we can tell, no water equals no life.

But new research suggests another delineation in solar systems that could influence habitability: The Soot Line.