Matt Williams, Author at Universe Today

July 18, 2020July 18, 2020 by Matt Williams

The Moon Might Have Formed a Little Later than Originally Believed

According to the Giant Impact Hypothesis, the Moon formed when a Mars-sized object (named Theia) collided with Earth billion years ago, at a time when the Earth was still a ball of magma. This event not only led to the Earth-Moon system we recognize today, it is also beleived to have led to the differentiation of the Earth’s core region into an molten Outer Core and a solid Inner Core.

However, there has been an ongoing debate as to the timing of this impact and how long the subsequent formation of the Moon took place. According to a new study by a team of German researchers, the Moon formed from a magma ocean that took up to 200 million years to solidify. This means that the Moon finished forming about 4.425 billion years ago, or 100 million years later than previously thought.

July 16, 2020July 21, 2020 by Matt Williams

Do the TRAPPIST-1 Planets Have Atmospheres?

Most exoplanets orbit red dwarf stars because they're the most plentiful stars. This is an artist's illustration of what the TRAPPIST-1 system might look like from a vantage point near planet TRAPPIST-1f (at right). Credits: NASA/JPL-Caltech

In February of 2017, the scientific community rejoiced as NASA announced that a nearby star (TRAPPIST-1) had a system of no less than seven rocky planets! Since that time, astronomers have conducted all kinds of follow-up observations and studies in the hopes of learning more about these exoplanets. In particular, they have been attempting to learn if any of the planets located in the stars Habitable Zone (HZ) could actually be habitable.

Many of these studies have been concerned with whether or not the TRAPPIST-1 planets have sufficient water on their surfaces. But just as important is the question of whether or not any have viable atmospheres. In a recent study that provides an overview of all observations to date on TRAPPIST-1 planets, a team found that depending on the planet in question, they are likely to have good atmospheres, if any at all.

July 16, 2020July 16, 2020 by Matt Williams

Perseverance Has Been Put Inside its Atlas V Rocket

This summer – between July 30th and August 15th – NASA’s Perseverance rover will begin its long journey for Mars. Once it arrives (by February of 2021), it will join its sister mission, the Curiosity rover, and a slew of other robotic landers and orbiters that are busy characterizing the atmosphere and surface of the Red Planet. Ultimately, the goal of Perseverance is to determine if Mars once supported life (and maybe still does!)

Just last week (July 7th), the Perseverance rover and all the other elements of the Mars 2020 spacecraft were loaded aboard the United Launch Alliance (ULA) Atlas V rocket that will send it on its way. This included the aeroshell, cruise stage, and descent stage, which will be responsible for transporting the Perseverance rover during its six-month journey to Mars and depositing it on the surface.

July 15, 2020July 15, 2020 by Matt Williams

15 Different Ideas for Rovers That Could Explore Venus

An illustration of a concept for a possible wind-powered Venus rover. Credits: NASA/JPL-Caltech

NASA and many other space agencies around the world are eager to get back to Venus. And this time around, they want to send missions that can explore the surface for more than a few hours! To this end, engineers at NASA’s Jet Propulsion Laboratory (JPL) and Glenn Research Center (GRC) are investigating “steampunk” concepts and special electronic systems that will allow rovers to work in Venus’ hellish environment.

In February of 2020, NASA also launched a public competition through HeroX to seak ideas for rovers that would be capable of surviving the extreme conditions on Venus’ surface – the “Exploring Hell Challenge“. After months of consideration for all the worthy submissions they received, NASA recently announced that it in addition to three winning concepts, they have selected two additional finalists and ten honorable mentions!

July 14, 2020July 14, 2020 by Matt Williams

NASA Chooses 10 Projects that Will Help it Live Off the Land… on the Moon

Artist's impression of surface operations on the Moon. Credit: NASA

Before this decade is out, NASA plans to send astronauts to the Moon for the first time since the Apollo Era and establish a sustainable program of lunar exploration. In order to ensure that future lunar missions are cost-effective and not entirely dependent on Earth for resupply, NASA is looking for ways to leverage lunar resources – everything from water ice to oxygen-rich regolith – to meet their astronauts’ needs.

This process, known as In-Situ Resource Utilization (ISRU), is a major part of NASA’s plans to explore the Moon in the coming years, as well their long-term plans to send astronauts to Mars. To help them meet this challenge, NASA recently selected 10 proposals through its Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) program to developed ISRU-related technologies.

July 13, 2020July 13, 2020 by Matt Williams

Will We See a Starship Test This Week?

As we speak, engineers at SpaceX’s Boca Chica test facility are busy getting the fifth Starship prototype (SN5) ready. Having recently passed the crucial cryogenic load test, and with the installation of its SN27 Raptor engine, the ground crews are now gearing up for a static fire test. Assuming the SN5 doesn’t explode in a massive fireball (as the SN4 did), it will be ready to make the first hop test of a full-scale Starship prototype.

July 12, 2020July 12, 2020 by Matt Williams

NASA and HeroX are Looking to Light Up the Moon!

NASA is busy preparing to land astronauts around the Moon’s South Pole-Aitken Basin by 2024, which will be the first time astronauts have walked on lunar soil since the Apollo Era. By 2028, they plan to establish the Lunar Gateway and Lunar Base Camp, which will facilitate long-term lunar exploration and also missions to Mars. Naturally, a lot of things need to be figured out beforehand, like seeing to the astronauts’ needs.

This includes shelter from the elements, food, and water, but also electricity. To meet that demand, the NASA Centennial Challenges Program has once again launched an incentive challenge through HeroX to inspire solutions. It’s called the Watts on the Moon Challenge, and in exchange for a prize purse of up to $5 million, NASA is looking for solutions on how to provide a reliable supply of energy for lunar missions.

July 11, 2020July 11, 2020 by Matt Williams

NASA has a Pretty Big Checklist for Boeing to Fix on Starliner

An artist's illustration of Boeing's CST-100 Starliner spacecraft in orbit. Credit: Boeing

In 2014, NASA contracted two major aerospace companies (Boeing and SpaceX) to help them restore domestic launch capability to the United States. As part of the Commercial Crew Program (CCE), Boeing and SpaceX developed the CST-100 Starliner the Crew Dragon spacecraft, respectively. But whereas the Crew Dragon finished testing and even carried astronauts to the ISS, the Starliner met with some problems.

During its first uncrewed test flight – Orbital Flight Test-1 (OFT-1) – in December 2019, the Starliner experienced some failures that prevented it from docking with the ISS. After a thorough investigation, the joint NASA-Boeing Independent Review team has completed its final assessment and identified 80 areas where corrections need to be made before the Starliner can conduct another orbital flight test.

July 10, 2020July 10, 2020 by Matt Williams

That’s So Metal. NASA’s Psyche Mission is Now Under Construction

In August of 2022, NASA will send a robotic spacecraft to the Main Asteroid Belt to explore a truly unique object: a metal asteroid. This object is known as 16 Psyche, is one of the largest asteroids in the Belt, and is composed almost entirely of iron and nickel. The most widely-accepted theory is that it used to be the core of a protoplanet in the Belt that experienced a massive collision that sent its rocky crust and mantle into space.

The spacecraft, also named Psyche, was submitted as part of a call for proposals for NASA’s Discovery Program in 2015 and was selected as the 14th Discovery mission by 2017. Most recently, the spacecraft passed a crucial milestone by moving from the planning and designing phase to the manufacturing phase, where all of the hardware that will allow it to make the journey is being assembled.

July 9, 2020July 10, 2020 by Matt Williams

A Giant Galaxy Seen Lighting Up the Universe Shortly After the Big Bang

An illustration of cosmic expansion. Credit: NASA's Goddard Space Flight Center Conceptual Image Lab

About 370,000 years after the Big Bang, the Universe experienced a period that cosmologists refer to as the “Cosmic Dark Ages.” During this period, the Universe was obscured by pervasive neutral gas that obscured all visible light, making it invisible to astronomers. As the first stars and galaxies formed over the next few hundred millions of years, the radiation they emitted ionized this plasma, making the Universe transparent.

One of the biggest cosmological mysteries right now is when “cosmic reionization” began. To find out, astronomers have been looking deeper into the cosmos (and farther back in time) to spot the first visible galaxies. Thanks to new research by a team of astronomers from University College London (UCL), a luminous galaxy has been observed that was reionizing the intergalactic medium 13 billion years ago.