Matt Williams, Author at Universe Today

August 24, 2021August 27, 2021 by Matt Williams

Dust Storms on Mars Continue to Make the Planet Drier

NASA’s Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft celebrated one Earth year in orbit around Mars on Sept. 21, 2015. MAVEN was launched to Mars on Nov. 18, 2013 from Cape Canaveral Air Force Station in Florida and successfully entered Mars’ orbit on Sept. 21, 2014. Credit: NASA

Despite decades of exploration and study, Mars still has its fair share of mysteries. In particular, scientists are still trying to ascertain what happened to the water that once flowed on Mars’ surface. Unfortunately, billions of years ago, the Martian atmosphere began to be stripped away by the solar wind, which also resulted in the loss of its surface water over time – although it was not entirely clear where it went and what mechanisms were involved.

To address this, a team of scientists recently consulted data obtained by three orbiter missions studying the Martian atmosphere. In the process, they found evidence that the smaller regional dust storms that happen almost annually on Mars are making the planet drier over time. These findings suggest that storms are a major driving force behind the evolution of Mars’ atmosphere and its transition to the freezing and desiccated place we know today.

August 22, 2021August 27, 2021 by Matt Williams

SpaceX Thinks it can Send Humans to the Moon Sooner Than 2024

Illustration of SpaceX Starship human lander design that will carry the first NASA astronauts to the surface of the Moon under the Artemis program. Credits: SpaceX

It’s no secret that a new Space Race has been brewing over the past few years. This time, rather than being a competition between two federal space agencies, the race has more competitors and is more complicated. In addition to more state competitors, there are also commercial space entities vying for positions and lucrative contracts. Add to that a network of public-private partnerships, and you have Space Race 2.0!

In particular, there has been quite the stir ever since NASA awarded the Artemis contract for the Human Landing System (HLS) to SpaceX. This resulted in legal challenges filed by Blue Origin and Dynetics (SpaceX’s competitors), as well as a lawsuit and messy public relations campaign. NASA has since removed the stop-work order and commenced payments to SpaceX, which recently indicated their HLS concept could be ready to go before the 2024 deadline.

August 20, 2021August 27, 2021 by Matt Williams

James Webb’s Upper Stage is off to the Launch Site

Artist image of JWST in space. Credit: NASA

In November (or early December) of this year, after many excruciating delays, NASA’s James Webb Space Telescope (JWST) will finally launch to space. As the most advanced and complex observatory ever deployed, the James Webb will use its advanced suite of instruments to observe stars, exoplanets, and galaxies in the near and mid-infrared spectrum. In the process, it will address some of the most enduring mysteries about the nature of the Universe.

When the time comes, the James Webb will fly aboard an Ariane 5 rocket from the European Space Agency (ESA) launch facility near the town of Korou, French Guayana. Overnight on August 17^th, 2021, the upper stage of that Ariane 5 began making its way in its cargo container from the ArianeGroup facility in Bremen, Germany, to Neustadt port, where it will board a ship bound for the ESA spaceport in French Guiana.

August 19, 2021August 19, 2021 by Matt Williams

Musk Confirms how “Mechazilla” Will Catch and Assemble Starship and Super Heavy for Rapid Reuse

In January of 2021, Elon Musk announced SpaceX’s latest plan to increase the number of flights they can mount by drastically reducing turnaround time. The key to this was a new launch tower that would “catch” first stage boosters after they return to Earth. This would forego the need to install landing legs on future Super Heavy boosters and potentially future Starship returning to Earth.

Musk shared this idea in response to a Tweet made by an animator who goes by the Twitter handle Erc X, who asked if his latest render (of a Starship landing next to its launch tower) was accurate. As usual, Musk responded via Twitter, saying:

“We’re going to try to catch the Super Heavy Booster with the launch tower arm, using the grid fins to take the load… Saves mass & cost of legs & enables immediate repositioning of booster on to launch mount—ready to refly in under an hour.”

August 18, 2021August 18, 2021 by Matt Williams

Musk Says That Refueling Starship for Lunar Landings Will Take 8 Launches (Maybe 4)

Artist concept of the SpaceX Starship on the surface of the Moon. Credits: SpaceX

The fight over who gets to take the Artemis astronauts back to the Moon continues! It all began when NASA announced that they had awarded the contract for its Human Landing System (HLS), the reusable lunar lander that would ferry the Artemis III astronauts to the lunar surface. This decision did not sit well with the other two finalists, Blue Origin and Dynetics, who appealed the decision because NASA was showing “favoritism.”

The Government Accountability Office (GAO) rejected these appeals, which has prompted Blue Origin founder Jeff Bezos to bring out the big guns. In addition to filing a lawsuit in federal court and lobbying Congress, they have also waged a public relations war against SpaceX itself, calling their safety record and into question. In response, Elon Musk took to Twitter to address Blue Origin’s claims and set the record straight.

August 17, 2021August 17, 2021 by Matt Williams

2024 Artemis Landings Could Slip Because of a Lack of Spacesuits. Musk Offers to Develop Them

Artist's illustration of the new spacesuit NASA is designing for Artemis astronauts. It's called the xEMU,, or Exploration Extravehicular Mobility Unit. Image Credit: NASA

In March of 2019, NASA was directed to develop all the necessary equipment and planning to send astronauts back to the Moon by 2024. This plan, officially named Project Artemis, was part of an agency-wide shakeup designed to ensure that the long-awaited return to the Moon takes place sooner than NASA had originally planned. In accordance with their “Moon to Mars” framework, NASA hoped to assemble the Lunar Gateway first, then land astronauts on the surface by 2028.

Unfortunately, this ambitious proposal has led to all sorts of complications and forced NASA to shift certain priorities. Most recently, NASA’s Office of Inspector General (OIG) submitted a report that indicated that their new Exploration Extravehicular Mobility Units (xEMU) spacesuits will not be ready in time. The resulting delay has prompted Elon Musk to offer the services of SpaceX to expedite the spacesuit’s development and get Artemis back on schedule.

August 16, 2021March 24, 2022 by Matt Williams

A new Assessment of the World’s Climate is out. The News Isn’t Good

In 2014, the UN Intergovernmental Panel on Climate Change (IPCC) released its Fifth Assessment Report (AR5). As with previous reports, AR5 contained the latest findings of Climate Change experts from all relevant disciplines, as well as projections about the near future. In short, the AR5 and its predecessors were assessments of the impact anthropogenic Climate Change was having on the planet and how we could avoid worst-case scenarios.

On Aug. 9^th, 2021, the IPCC released a report titled Climate Change 2021: the Physical Science Basis. Combining the latest advances in climate science and multiple lines of evidence, this first report paints a rather bleak picture of the remainder of the 21^st century. At the same time, it presents a call to action and shows how mitigation strategies and reducing greenhouse gas emissions will ensure a better future for all.

August 16, 2021August 16, 2021 by Matt Williams

Did the Moon Ever Have a Magnetosphere?

In a few years, NASA will be sending astronauts to the Moon for the first time since the Apollo Era (1969-1972). As part of the Artemis Program, the long-term goal is to create the necessary infrastructure for a “sustained program of lunar exploration.” The opportunities this will present for lunar research are profound and will likely result in new discoveries about the formation and evolution of the Moon.

In particular, scientists are hoping to investigate the long-standing mystery of whether or not the Moon had a magnetosphere. In anticipation of what scientists might find, an international team of geophysicists led by the University of Rochester examined samples of lunar material brought back by the Apollo astronauts. Based on the composition of these samples, the team determined that the Moon’s dynamo was short-lived.

August 13, 2021September 9, 2021 by Matt Williams

Perseverance Fails to Collect its First Sample

Over the past few weeks, there was quite a bit of excitement in the air at the NASA Jet Propulsion Laboratory in Pasadena, California, where mission controllers were prepping the Perseverance rover to acquire its first sample from the Martian surface. This mission milestone would be the culmination of years of hard work by a team of over 90 dedicated scientists and engineers.

The commands to commence operations to take its first sample (from drill site Roubion) were sent to the rover on Sol 164 (Thurs, Aug. 5th). On the morning of Friday, Aug. 6th, the team gathered to witness the sampling data come in. Everything appeared to be fine until they were notified a few hours later that the sample tube was empty! Since then, the rover’s science and engineering teams have been investigating what could have become of the sample.

August 11, 2021August 11, 2021 by Matt Williams

Avoiding the Great Filter. How Long Until We’re Living Across the Solar System?

An edge-on view of a spiral galaxy. Credit: ESO

If you’re a fan of the Search for Extraterrestrial Intelligence (SETI) and the Fermi Paradox, then it’s likely you’ve heard of a concept known as the Great Filter. In brief, it states that life in the Universe may be doomed to extinction, either as a result of cataclysmic events or due to circumstances of its own making (i.e., nuclear war, climate change, etc.) In recent years, it has been the subject of a lot of talk and speculation, and not just in academic circles.

Stephen Hawking and Elon Musk have also weighed in on the issue, claiming that humanity’s only chance at long-term survival is to become “interplanetary.” Addressing this very possibility, a research team led by NASA’s Jet Propulsion Laboratory (JPL) recently created a timeline for potential human expansion beyond Earth. According to their findings, we have the potential of going interplanetary by the end of the century and intragalactic by the end of the 24th!