Matt Williams, Author at Universe Today

February 19, 2021February 19, 2021 by Matt Williams

Once He Steps Down From Amazon, Jeff Bezos Will be Able to Focus his Energy on Blue Origin

The New Glenn spacecraft. Credit: Blue Origin

When it comes to the private aerospace sector (aka. NewSpace), some names stand out from the rest. The most obvious of these is SpaceX (the brainchild of Elon Musk and the leading source of innovation in commercial space) and the United Launch Alliance (ULA), a joint venture between Boeing and Lockheed Martin. But what of Blue Origin, the private aerospace company created by Jeff Bezos in 2000?

In recent years, Blue Origin has fallen behind the competition and missed out on several billion dollars worth of contracts. But with Bezos stepping down as CEO of Amazon, industry sources have indicated that this could change soon (according to Eric M. Johnson at Reuters). With all of the opportunities available for commercial space, Bezos is now in a position to take a more hands-on role as the company faces a most pivotal year.

February 16, 2021February 16, 2021 by Matt Williams

Water Shaped Features on Mars Much Earlier Than Previously Believed

In two days (on Thursday, Feb. 18th, 2021), NASA’s Perseverance rover will land on Mars. As the latest robotic mission in the Mars Exploration Program (MEP), Perseverance will follow in the footsteps of its sister mission, Curiosity. Just in time for its arrival, research conducted at the Southwest Research Institute (SwRI) has shown that Mars’ surface was shaped by flowing water several million years earlier than previously thought.

February 14, 2021February 14, 2021 by Matt Williams

NASA has Decided to Start Building the Lunar Gateway Using the Falcon Heavy

An illustration of the Gateway’s Power and Propulsion Element and Habitation and Logistics Outpost in orbit around the Moon. Credits: NASA

In October of 2024, NASA will send “the first woman and the next man” to the Moon as part of the Artemis Program. This will be the first crewed mission to the lunar surface, and the first mission beyond Low Earth Orbit (LEO), since the closing of the Apollo Era in 1972. Beyond that, NASA plans to establish infrastructure on and around the Moon that will allow for “sustained lunar exploration and development.”

A key aspect of this is the Lunar Gateway, an orbiting habitat that will allow astronauts to make regular trips to and from the lunar surface. After much consideration, NASA recently announced that they have selected SpaceX to launch the foundational elements of the Gateway – the Power and Propulsion Element (PPE) and the Habitation and Logistics Outpost (HALO) – by May of 2024 (at the earliest).

February 13, 2021February 13, 2021 by Matt Williams

How Old is the Ice at Mars’ North Pole?

Ice at the north pole of Mars is seen from orbit in this image captured by Mars Express in May 2014. Credit: ESA/DLR/FU Berlin/J. Cowart

On Earth, the study of ice core samples is one of many methods scientists use to reconstruct the history of our past climate change. The same is true of Mars’ northern polar ice cap, which is made up of many layers of frozen water that have accumulated over eons. The study of these layers could provide scientists with a better understanding of how the Martian climate changed over time.

This remains a challenge since the only way we are able to study the Martian polar ice caps right now is from orbit. Luckily, a team of researchers from UC Boulder was able to use data obtained by the High-Resolution Imaging Science Experiment (HiRISE) aboard the Mars Reconnaissance Orbiter (MRO) to chart how the northern polar ice caps’ evolved over the past few million years.

February 10, 2021February 10, 2021 by Matt Williams

Super-Earth Conditions Simulated in the Lab to Discover if They’re Habitable

An artist’s conception of the magnetic fields of selected super-Earths as the Z machine, pictured at bottom, mimics the gravitational conditions on other planets. Credits: Eric Lundin; Z photo by Randy Montoya

Deep inside planet Earth, there is a liquid outer core and a solid inner core that counter-rotate with each other. This creates the dynamo effect that is responsible for generating Earth’s planetary magnetic field. Also known as a magnetosphere, this field keeps our climate stable by preventing Earth’s atmosphere from being lost to space. So when studying rocky exoplanets, scientists naturally wonder if they too have magnetospheres.

Unfortunately, until we can measure an exoplanet’s magnetic fields, we are forced to infer their existence from the available evidence. This is precisely what researchers at the Sandia National Laboratories did with its Z Pulsed Power Facility (PPF). Along with their partners at the Carnegie Institution for Science, they were able to replicate the gravitational pressures of “Super-Earths” to see if they could generate magnetic fields.

February 9, 2021February 9, 2021 by Matt Williams

Emirates Mars Mission Arrives at the Red Planet Today!

Artist's impression of the UAE's Hope satellite in space. Credit and ©: UAE Space Agency

On July 19^th, 2020, the Emirates Mars Mission (EMM) – aka. Al Amal (“Hope” in Arabic) – launched from the Tanegashima Space Center in Japan on its way to Mars. This mission, the first interplanetary effort to be mounted by an Arab nation, is being carried out by the Mohammed bin Rashid Space Centre (MBRSC) in the United Arab Emirates (UAE) in collaboration with a number of research institutions internationally.

February 8, 2021February 9, 2021 by Matt Williams

Nearby Ancient Dwarf Galaxies Have a Surprising Amount of Dark Matter

An artist's impression of the four tails of the Sagittarius Dwarf Galaxy (the orange clump on the left of the image) orbiting the Milky Way. The bright yellow circle to the right of the galaxy's center is our Sun (not to scale). Image credit: Amanda Smith (University of Cambridge)

Around the Milky Way, there are literally dozens of dwarf galaxies that continue to be slowly absorbed into our own. These galaxies are a major source of interest for astronomers because they can teach us a great deal about cosmic evolution, like how smaller galaxies merged over time to create larger structures. Since they are thought to be relics of the very first galaxies in the Universe, they are also akin to “galactic fossils.”

Recently, a team of astrophysicists from the Massachusetts Institute of Technology (MIT) observed one of the most ancient of these galaxies (Tucana II) and noticed something unexpected. At the edge of the galaxy, they observed stars in a configuration that suggest that Tucana II has an extended Dark Matter halo. These findings imply that the most ancient galaxies in the Universe had more Dark Matter than previously thought.

February 8, 2021February 23, 2023 by Matt Williams

What Are Extrasolar Planets?

An exoplanet about ten times Jupiter's mass located some 330 light years from Earth. X-ray: NASA/CXC/SAO/I.Pillitteri et al; Optical: DSS; Illustration: NASA/CXC/M.Weiss

For countless generations, human beings have looked out at the night sky and wondered if they were alone in the Universe. With the discovery of other planets in our Solar System, the true extent of the Milky Way galaxy, and other galaxies beyond our own, this question has only deepened and become more profound.

And whereas astronomers and scientists have long suspected that other star systems in our galaxy and the Universe had orbiting planets of their own, it has only been within the last few decades that any have been observed. Over time, the methods for detecting these “extrasolar planets” have improved, and the list of those whose existence has been confirmed has grown accordingly (over 4000 and counting!)

February 4, 2021February 4, 2021 by Matt Williams

SLS Will be Tested Again in About 3 Weeks

The core stage for the first flight of NASA’s Space Launch System rocket is seen in the B-2 Test Stand during a scheduled eight minute duration hot fire test, Saturday, Jan. 16, 2021, at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. Credits: NASA/Robert Markowitz

In November of 2021, NASA will embark on a new era of space exploration as they make the inaugural launch of the Space Launch System (SLS). When it enters service, this booster will be the most powerful rocket since the Saturn V, which took the Apollo astronauts to the Moon. This is fitting since the SLS will be the rocket returning astronauts to the Moon by 2024 (as part of Project Artemis).

To get the SLS ready for its first launch, NASA has been running the Core Stage through a series of tests designed to test all the systems and components of the heavy-launch system – collectively known as a “Green Run.” The next step in this process will be a second Green Run Hot Fire Test, where all four RS-25 engines on the SLS Core Stage will fire at once to show they can operate as part of a single integrated system.

February 4, 2021February 4, 2021 by Matt Williams

Every Challenge Astronauts Will Face on a Flight to Mars

Nuclear-powered transit habitat — An artist's conception shows a Mars transit habitat with a nuclear propulsion system. Credit: NASA

In 1972, the Space Race officially ended as NASA sent one last crew of astronauts to the surface of the Moon (Apollo 17). This was the brass ring that both the US and the Soviets were reaching for, the “Moonshot” that would determine who had supremacy in space. In the current age of renewed space exploration, the next great leap will clearly involve sending astronauts to Mars.

This will present many challenges that will need to be addressed in advance, many of which have to do with simply getting the astronauts there in one piece! These challenges were the subject of a presentation made by two Indian researchers at the SciTech Forum 2020, an annual event hosted by the International Academy of Astronautics (IAA), RUDN University, and the American Astronomical Society (AAS).