Matt Williams, Author at Universe Today

May 31, 2021May 24, 2021 by Matt Williams

JAXA Using Water Bottle Technology for Sample-Return Missions From the ISS

Artist's impression of the HRSC-II reentering Earth's atmosphere. Credit: JAXA

The International Space Station (ISS) is not only the largest and most sophisticated orbiting research facility ever built, it is arguably the most important research facility we have. With its cutting-edge facilities and microgravity environment, the ISS is able to conduct lucrative experiments that are leading to advances in astrobiology, astronomy, medicine, biology, space weather and meteorology, and materials science.

Unfortunately, the cost of transporting experiments to and from the ISS is rather expensive and something only a handful of space agencies are currently able to do. To address this, the Japanese Aerospace Exploration Agency (JAXA) and Tiger Corporation partnered in 2018 to create a new type of container that would cut the cost of returning samples to Earth. With the success of their initial design, JAXA and Tiger are looking to create a reusable version that will allow for regular sample returns from the ISS.

May 31, 2021May 31, 2021 by Matt Williams

There Might be Volcanoes at the Bottom of Europa’s sub-ice Oceans

Artist's concept of a Europa Clipper mission. Credit: NASA/JPL

In about three years, NASA plans to launch a robotic orbiter that will study Jupiter’s mysterious moon Europa. It’s called the Europa Clipper mission, which will spend four years orbiting Europa to learn more about its ice sheet, interior structure, chemical composition, and plume activity. In the process, NASA hopes to find evidence that will help resolve the ongoing debate as to whether or not Europa harbors life in its interior.

Naturally, scientists are especially curious about what the Clipper mission might find, especially in Europa’s interior. According to new research and modeling supported by NASA, it’s possible that volcanic activity occurred on the seafloor in the recent past – which could be happening still. This research is the most detailed and thorough 3D modeling on how internal heat is produced and transferred and what effect this will have on a moon.

May 30, 2021May 30, 2021 by Matt Williams

Zhurong is Rolling on Mars

China's Zhurong rover on Mars — An image from China's Zhurong rover shows spacecraft hardware in the foreground and Martian terrain in the background. (Credit: CNSA)

On May 22^nd, 2021, the Zhurong rover – part of Tianwen-1, China’s first mission to Mars – descended from its lander and drove on the Martian surface for the first time. According to the mission’s official social media account, the rover drove down its descent ramp from the Tianwen-1 lander at 10:40 a.m. Beijing time (07:40 p.m. PDT; 10:40 p.m. EDT) and placed its wheels upon the surface of Mars.

May 29, 2021May 29, 2021 by Matt Williams

A Dark Matter map of our Local Cosmic Neighborhood

Simulation of dark matter and gas. Credit: Illustris Collaboration (CC BY-SA 4.0)

Since it was first theorized in the 1970s, astrophysicists and cosmologists have done their best to resolve the mystery that is Dark Matter. This invisible mass is believed to make up 85% of the matter in the Universe and accounts for 27% of its mass-energy density. But more than that, it also provides the large-scale skeletal structure of the Universe (the cosmic web), which dictates the motions of galaxies and material because of its gravitational influence.

Unfortunately, the mysterious nature of Dark Matter means that astronomers cannot study it directly, thus prevented them from measuring its distribution. However, it is possible to infer its distribution based on the observable influence its gravity has on local galaxies and other celestial objects. Using cutting-edge machine-learning techniques, a team of Korean-American astrophysicists was able to produce the most detailed map yet of the local Universe that shows what the “cosmic web” looks like.

May 27, 2021May 28, 2021 by Matt Williams

Move Over Artemis Accords! Behold the Lunar Governance Report and EAGLE Manifesto!

Illustration of Artemis astronauts on the Moon. Credits: NASA

In July 1999, the Space Generation Advisory Council (SGAC) was created with the purpose of representing the “Space Generation” to the UN Office of Outer Space Affairs (UNOOSA). For this non-governmental organization and professional network, this would consist of bringing the “views of students and young space professionals to the United Nations (UN), space industry and other organizations”.

Given the importance of the Moon for all of our future space exploration goals, SGAC created an interdisciplinary group in June of 2020 that is focused on lunar policy. Known as the Effective and Adaptive Governance for a Lunar Ecosystem (E.A.G.L.E.), this group of 14 young space professionals is dedicated to ensuring that the younger generation has a voice when it comes to the development of regulations for lunar policy.

On May 12^th, 2021, the SGAC released the report prepared by the EAGLE group, which outlines their ideas and proposals for how we can ensure that the regulations governing lunar activities are inclusive, effective, and adaptative. It’s known as the Lunar Governance Report, a document that will be presented during the 2021 meetings of the UN Committee on the Peaceful Uses of Outer Space (COPUOS).

May 26, 2021May 26, 2021 by Matt Williams

The Elements for Life Depend on Both how and Where a Planet Forms

Artist's conception of a solar system in formation. It's likely that exoplanet formation around other stars proceeded similarly. Credit: NASA/FUSE/Lynette Cook

In the past few decades, the number of planets discovered beyond our Solar System has grown into the thousands. At present, 4,389 exoplanets have been confirmed in 3,260 systems, with another 5,941 candidates awaiting confirmation. Thanks to numerous follow-up observations and studies, scientists have learned a great deal about the types of planets that exist in our Universe, how planets form, and how they evolve.

A key consideration in all of this is how planets become (and remain) habitable over time. In general, astrobiologists have operated under the assumption that habitability comes down to where a planet orbits within a system – within its parent star’s habitable zone (HZ). However, new research by a team from Rice University, indicates that where a planet forms in its respective star system could be just as important.

May 19, 2021May 19, 2021 by Matt Williams

Astronauts Could Dust off Themselves and Equipment on the Moon With an Electron Beam

Buzz Aldrin's bootprint on the surface of the moon during the Apollo 11 mission on July 20, 1969. Credit: NASA

In the coming years, NASA will be sending astronauts to the Moon for the first time since the Apollo Era. This time, and as part of the Artemis Program, NASA also plans to build the necessary infrastructure to establish a sustained human presence on the Moon and eventually missions to Mars – including the Artemis Base Camp and the orbiting Lunar Gateway.

They’ll be getting some new equipment, such as the exploration Extravehicular Mobility Unity (xEMU) spacesuit and a fancy new lunar lander. Of course, as the Artemis astronauts will also have to deal with the same hazards as their predecessors – not the least of which is lunar dust (or regolith). Luckily, NASA is investigating a possible solution in the form of a handheld electron/ultraviolet (UV) device that could mitigate this hazard.

May 18, 2021May 18, 2021 by Matt Williams

A Solution to Space Junk: Satellites Made of Mushrooms?

Credit: Christian Scheckhuber/Wikipeia Commons (left); UC3M (right)

According to the latest numbers from the ESA’s Space Debris Office (SDO), there are roughly 6,900 artificial satellites in orbit. The situation is going to become exponentially crowded in the coming years, thanks to the many telecommunications, internet, and small satellites that are expected to be launched. This creates all kinds of worries for collision risks and space debris, not to mention environmental concerns.

For this reason, engineers, designers, and satellite manufacturers are looking for ways to redesign their satellites. Enter Max Justice, a cybersecurity expert, former Marine, and “Cyber Farmer” who spent many years working in the space industry. Currently, he is working towards a new type of satellite that is made out of mycelium fibers. This tough, heat-resistant, and environmentally friendly material could trigger a revolution in the booming satellite industry.

May 16, 2021May 17, 2021 by Matt Williams

60 Years Later, is it Time to Update the Drake Equation?

The Drake Equation, a mathematical formula for the probability of finding life or advanced civilizations in the universe. Credit: University of Rochester

On November 1^st, 1961, a number of prominent scientists converged on the National Radio Astronomy Observatory in Green Bank, West Virginia, for a three-day conference. A year earlier, this facility had been the site of the first modern SETI experiment (Project Ozma), where famed astronomers Frank Drake and Carl Sagan used the Green Bank telescope (aka. “Big Ear”) to monitor two nearby Sun-like stars – Epsilon Eridani and Tau Ceti.

While unsuccessful, Ozma became a focal point for scientists who were interested in this burgeoning field known as the Search for Extraterrestrial Intelligence (SETI). As a result, Drake and Sagan were motivated to hold the very first SETI conference, wherein the subject of looking for possible extraterrestrial radio signals would be discussed. In preparation for the meeting, Drake prepared the following heuristic equation:

N = R^ x f_p x n_e x f_l x f_i x f_c x L*

This would come to be known as the “Drake Equation,” which is considered by many to be one of the most renowned equations in the history of science. On the sixtieth anniversary of its creation, John Gertz – a film producer, amateur astronomer, board-member with BreakThrough Listen, and the three-term former chairman of the board for the SETI Institute – argues in a recent paper that a factor by factor reconsideration is in order.

May 12, 2021May 13, 2021 by Matt Williams

In 1.3 Million Years, a Star Will Come Within 24 Light-Days of the Sun

Artist's impression of an orbiting swarm of dusty comet fragments around Tabby's Star. Could these be responsible for its peculiar dips in brightness or is there a biological reason? A small red dwarf star (above, left) lies near Tabby's. Credit: NASA/JPL-Caltech

Within the Milky Way, there are an estimated 200 to 400 billion stars, all of which orbit around the center of our galaxy in a coordinated cosmic dance. As they orbit, stars in the galactic disk (where our Sun is located) periodically shuffle about and get closer to one another. At times, this can have a drastic effect on the star that experience a close encounter, disrupting their systems and causing planets to be ejected.

Knowing when stars will make a close encounter with our Solar System, and how it might shake-up objects within it, is therefore a concern to astronomers. Using data collected by the Gaia Observatory, two researchers with the Russian Academy of Sciences (RAS) determined that a handful of stars will be making close passes by our Solar System in the future, one of which will stray pretty close!

N = R* x fp x ne x fl x fi x fc x L

N = R^ x f_p x n_e x f_l x f_i x f_c x L*