Universe Today

April 3, 2023April 3, 2023 by Alan Boyle

Meet the Four Astronauts Who’ll Fly Around the Moon for Artemis II

Artemis II crew portrait — The Artemis II crew includes, clockwise from left, Christina Koch, Victor Glover, Jeremy Hansen and Reid Wiseman. (Credit: Josh Valcarcel / NASA)

The four astronauts chosen for NASA’s Artemis II mission will check off a string of firsts during their flight around the moon, scheduled for next year. It’ll mark the first trip beyond Earth orbit for a woman, for a person of color and for a Canadian. Artemis II will represent yet another first for Canadian astronaut Jeremy Hansen: Based on the current crew schedule, it’ll be his first-ever space mission.

Commander Reid Wiseman, pilot Victor Glover and mission specialist Christina Koch round out the first crew for NASA’s Artemis moon program, which picks up on the legacy of the Apollo moon program. If all goes according to plan, they’ll be the first humans to circle the moon since Apollo 17 in 1972.

April 3, 2023April 3, 2023 by Matt Williams

Astronomers Think They've Found One of the Biggest Black Holes Ever Seen

Artist's impression of an ultramassive black hole (UBH). Credit: ESA/Hubble/DSS/Nick Risinger/N. Bartmann

In 1931, Indian-American physicist Subrahmanyan Chandrasekhar proposed a resolution to Einstein’s Theory of General Relativity that postulated the existence of black holes. By 1972, astronomers obtained the first conclusive evidence that these objects existed in our Universe. Observations of quasars and the center of the Milky Way also revealed that most massive galaxies have supermassive black holes (SMBHs) at their cores. Since then, the study of black holes has revealed that these objects vary in size and mass, ranging from micro black holes (MBHs) and intermediate black holes (IMBHs) to SMBHs.

Using astronomical simulations and a technique known as Gravitational Lensing, an international team of astrophysicists detected what could be the largest black hole ever observed. This ultramassive black hole (UMBH) has a mass roughly 30 billion times that of our Sun and is located near the center of the Abell 1201 galaxy cluster, roughly 2.7 billion light-years from Earth. This is the first time a black hole has been found using Gravitational Lensing, and it could enable studies that look farther into space to find black holes and deepen our understanding of their size and scale.

April 3, 2023April 3, 2023 by Matt Williams

Leaky Soyuz Capsule Returns to Earth

The Soyuz MS-22 crew ship is pictured docked to the Rassvet module. In the background, the Prichal docking module is attached to the Nauka multipurpose laboratory module. Credit: NASA

Roscosmos has had quite the run of bad luck lately. In addition to sanctions putting pressure on their space program and the cancellation of agreements (all due to the war in Ukraine), the Russian space agency has experienced several problems in space. On December 14th, 2022, and February 11th, 2023, two space capsules reportedly suffered radiator coolant leaks (Soyuz MS-22 and Progress 82). In addition to delivering fresh supplies to the International Space Station (ISS), one of the spacecraft (M-22) was slated to bring three members of Expedition 68 back to Earth.

Luckily, on February 25th, Russia announced it was sending another Soyuz capsule to replace the M-22 (Soyuz M-23) and retrieve the three crew members, cosmonauts Sergey Prokopyev and Dmitri Petelin, and astronaut Frank Rubio (who will return to Earth now on September 27th). In addition, Tuesday, March 28th, Russia undocked the M-22 from the ISS and successfully brought it home without crew. NASA provided live coverage of the undocking and departure of the uncrewed spacecraft via NASA TV, the agency website, and the NASA app.

April 2, 2023April 2, 2023 by Anton Pozdnyakov

JWST Reveals Trappist-1 Data, Earth-Sized Rogue Planet, Vulcan Delay

We finally got JWST data about TRAPPIST-1. An Earth-sized rogue planet was found. More information about China’s plans for the Moon.

April 2, 2023April 2, 2023 by Andy Tomaswick

Pale Blue Successfully Operates its Water-Based Propulsion System in Orbit

New in-space propulsion techniques seem to be popping out of the woodwork. The level of innovation behind moving things around in space is astounding, and now a company from Japan has just hit a significant milestone. Pale Blue, which I assumed was named as a nod to a beloved Carl Sagan book, recently successfully tested their in-orbit water-based propulsion system, adding yet another safe, affordable propulsion system to satellite designers’ repertoires.

April 1, 2023April 1, 2023 by Andy Tomaswick

Don’t Just Grow Potatoes on Mars, Use them for Concrete

A while back, we reported on a research group that was using an interesting mix of materials to create concrete on Mars. The University of Manchester researchers used blood and urine to create concrete bricks using Martian regolith stronger than concrete used on Earth. However, there was an obvious downside of literally requiring blood to make them, let alone the side effects of having astronauts potentially live in a building built partially out of their own bodily fluids. So the researchers thought up a different material whose usefulness in space will be familiar to anyone who has read Andy Weir’s most famous novel – potatoes.

April 1, 2023April 23, 2023 by Matt Williams

2033 is the Perfect Year to Send Humans to Mars (With a Bonus Venus Flyby)

According to a new report, NASA could launch a orbital-only mission to Mars in 2033. Credits: NASA

In the coming decade, NASA and China plan to send the first crewed missions (astronauts and taikonauts) to Mars. Both agencies hope to begin sending missions by 2033, coinciding with a Mars Opposition, followed by additional missions in 2035, 2037, and after. These missions will culminate with the creation of a Mars surface habitat that will enable future missions and research. Launch opportunities for these missions are limited because the distances between Earth and Mars vary considerably over time, ranging from about 56 million km (~35 million mi) to more than 400 million km (250 million mi).

The times when Earth and Mars are at their closest (known as a Mars Opposition) only occur once every 26 months. Moreover, using conventional propulsion methods, it takes missions six to nine months to travel between Earth and Mars. As a result, round-trip missions to Mars could take up to three years, dramatically increasing radiation exposure for the crew and the time they spend in microgravity. According to a recent study from NASA’s Jet Propulsion Laboratory (JPL), 2033 will be a unique opportunity to send a crewed orbital mission to Mars that lasts just 1.6 years.

March 31, 2023March 31, 2023 by Nancy Atkinson

Low Gravity Simulator Lets You Jump Around in Lunar Gravity

A participant uses the MoLo facility in Milan, Italy which simulates lunar gravity. Credit: ESA.

When the Apollo astronauts landed on the Moon, they had to perform tasks in 1/6th of Earth’s gravity. At first, walking and working in this low gravity environment posed some challenges. However, the astronauts soon adapted and figured out that hopping like a bunny made it easier to get around.

The Artemis astronauts will also need to adapt to life on the Moon, and to that end, ESA has built a unique facility in a 17-meter (55 ft.) refurbished ventilation shaft.

March 31, 2023March 30, 2023 by Carolyn Collins Petersen

Now We Know How a Solar Storm Took Out a Fleet of Starlinks

A view of an auroral storm from the ISS. Aurorae are one effect of solar storms like the one that took out 39 Starlink satellites in 2022. Credit: NASA/ESA/Tim Peake — A view of an auroral storm from the ISS. Credit: NASA/ESA/Tim Peake

On March 23rd, sky observers marveled at a gorgeous display of northern and southern lights. It was reminder that when our Sun gets active, it can spark a phenomenon called “space weather.” Aurorae are among the most benign effects of this phenomenon.

March 30, 2023April 2, 2023 by Matt Williams

Gravitational Waves From Colliding Neutron Stars Matched to a Fast Radio Burst

Artist’s impression of a fast radio burst traveling through space and reaching Earth. Credit: ESO/M. Kornmesser

Fast Radio Bursts (FRBs) were first detected in 2007 (the Lorimer Burst) and have remained one of the most mysterious astronomical phenomena ever since. These bright radio pulses generally last a few milliseconds and are never heard from again (except in the rare case of Repeating FRBs). And then you have Gravitational Waves (GW), a phenomenon predicted by General Relativity that was first detected on September 14th, 2015. Together, these two phenomena have led to a revolution in astronomy where events are detected regularly and provide fresh insight into other cosmic mysteries.

In a new study led by the Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav), an Australian-American team of researchers has revealed that FRBs and GWs may be connected. According to their study, which recently appeared in the journal Nature Astronomy, the team noted a potential coincidence between a binary neutron star merger and a bright non-repeating FRB. If confirmed, their results could confirm what astronomers have expected for some time – that FRBs are caused by a variety of astronomical events.