Universe Today

April 8, 2022April 8, 2022 by Matt Williams

The Four Private Axiom Astronauts are off to the International Space Station

The Ax-1 crew aboard the Dragon Endeavor spacecraft. Credit: SpaceX

This morning, at 11:17 AM EDT (08:17 AM PDT), the first all-private astronaut mission to the International Space Station (ISS) lifted off from Launch Complex 39A at NASA Kennedy Space Center in Florida. Designated Axiom Mission 1 (Ax-1), this mission consists of four commercial astronauts flying aboard the SpaceX Dragon Endeavour spacecraft that launched atop a SpaceX Falcon 9 rocket. The launch was live-streamed via NASA’s official Youtube channel (you can catch the replay here).

April 8, 2022April 8, 2022 by Shawn DiCenza

Giant Space Telescopes Could Be Made Out of Liquid

The Hubble space telescope has a primary mirror of 2.4 meters. The Nancy Grace Roman telescope has one at 2.4 meters and the James Webb Space Telescope has a whopping 6.5 meter primary mirror. These are all fine and well to get the job done that they were designed for, but what if… we could have even bigger mirrors?

The larger the mirror, the more light is collected. This means that we can see farther back in time with bigger mirrors to observe star and galaxy formation, image exoplanets directly, and to work out just what dark matter is.

But the process for creating a mirror is involved and takes time. There is casting the mirror blank to get the basic shape. Then you have to toughen the glass by heating and slow cooling. Grinding the glass down and polishing it into its perfect shape comes next followed by testing and coating the lens. This isn’t so bad for smaller lenses, but we want bigger. Much bigger.

Enter the idea for using fluids to create lenses in space that are 10x – 100x bigger. And the time it would take to make them would be significantly less than a glass-based lens.

April 8, 2022April 8, 2022 by Matt Williams

A New Record for the Most Distant Galaxy, Seen Just 300 Million Years After the Big Bang

Three-color image of HD1, the most distant galaxy candidate to date, created using data from the VISTA telescope. The red object in the center of the zoom-in image is HD1. Credit: Harikane et al.

Since the Renaissance astronomer Galileo Galilee first studied the heavens using a telescope he built himself, astronomers have been pushing the boundaries of what they can observe. After centuries of progress, they have been able to study and catalog objects in all but the earliest periods of the Universe. But thanks to next-generation instruments and technologies, astronomers will soon be able to observe the “Cosmic Dawn” era – ca. 50 million to billion years after the Big Bang.

In recent years, astronomers have made discoveries that preview what this will be like, the most recent of which is the galaxy candidate known as HD1. This galaxy is about 13.5 billion light-years from Earth (32.2 billion light-years in terms of “proper distance“), making it the farthest ever observed. This discovery implies that galaxies existed as early as 300 million years after the Big Bang, a finding which could have drastic implications for astronomy and cosmology!

April 7, 2022April 7, 2022 by Matt Williams

Canada's CHIME is Getting More Observatories to Search for Fast Radio Bursts

CHIME consists of four metal "half-pipes", each one 100 meters long. Image Credit: CHIME/Andre Renard, Dunlap Institute.

In 2017, the Canadian Hydrogen Intensity Mapping Experiment (CHIME) began to gather light from the Universe to address some of the biggest questions and astrophysics and cosmology. Located at the Dominion Radio Astrophysical Observatory (DRAO) in British Columbia, this interferometric radio telescope has been a game-changer for studying Fast Radio Bursts (FRBs), which remain one of the most mysterious cosmic mysteries facing astronomers today.

In the near future, CHIME will be getting an expansion that will help it more accurately identify where FRBs are coming from. This will consist of a new radio telescope outrigger located at the SETI Institute’s Hat Creek Radio Observatory (HCRO), new outriggers near Princeton, British Columbia, and at the Green Bank Observatory in West Virginia. These will work with the main CHIME telescope to localize CHIME-detected FRBs precisely in the night sky.

April 7, 2022April 7, 2022 by Matt Williams

If Aliens Were Sending us Signals, This is What They Might Look Like

For over sixty years, scientists have been searching the cosmos for possible signs of radio transmission that would indicate the existence of extraterrestrial intelligence (ETI). In that time, the technology and methods have matured considerably, but the greatest challenges remain. In addition to having never detected a radio signal of extraterrestrial origin, there is a wide range of possible forms that such a broadcast could take.

In short, SETI researchers must assume what a signal would look like, but without the benefit of any known examples. Recently, an international team led by the University of California Berkeley and the SETI Institute developed a new machine learning tool that simulates what a message from extraterrestrial intelligence (ETI) might look like. It’s known as Setigen, an open-source library that could be a game-changer for future SETI research!

April 6, 2022April 6, 2022 by Evan Gough

Digging Through Kepler Data Turns Up a Near Twin of Jupiter

The exoplanet, K2-2016-BLG-0005Lb, is almost identical to Jupiter in terms of its mass and its distance from its sun was discovered using data obtained in 2016 by NASA's Kepler space telescope. The exoplanetary system is twice as distant as any seen previously by Kepler, which found over 2,700 confirmed planets before ceasing operations in 2018. Image Credit: Specht et al. 2022.

NASA’s Kepler planet-hunting spacecraft was deactivated in November 2018, about ten years after it launched. The mission detected over 5,000 candidate exoplanets and 2,662 confirmed exoplanets using the transit method. But scientists are still working with all of Kepler’s data, hoping to uncover more planets in the observations.

A team of researchers have announced the discovery of one more planet in the Kepler data, and this one is nearly a twin of Jupiter.

April 6, 2022April 19, 2022 by Evan Gough

Marsquakes are Caused by Shifting Magma

Mars' interior as revealed by the NASA/DLR InSight lander. Image Credit: Cottar, Koelemeijer, Winterbourne, NASA

Before the InSight Lander arrived on Mars, scientists could only estimate what the planet’s internal structure might be. Its size, mass, and moment of inertia were their main clues. Meteorites, orbiters, and in-situ sampling by rovers provided other clues.

But when InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) arrived on Mars in November 2018 and deployed its seismometer, better data started streaming in.

April 6, 2022April 6, 2022 by David Dickinson

BluShift Aerospace Tests MAREVL Engine, Eyes Move to Kennedy Space Center

MARVEL Test — bluShift runs a full-scale test of its MARVL engine. Credit: bluShift Aerospace

With the first test of its MAREVL Engine complete, Maine’s space launch startup bluShift Aerospace looks to expand operations.

Move over, SpaceX, RocketLab and Astra. A new space launch startup is looking to get into the small satellite launch business. bluShift Aerospace based out of Brunswick, Maine, recently completed a test of its full-scale (Modular Adaptable Rocket Engine for Vehicle Launch (MAREVL) at its Brunswick site, ahead of a launch of its Starless Rogue rocket, possibly as early as late this year.

April 5, 2022April 5, 2022 by Matt Williams

Cultured Meat Could Keep Astronauts fed in Space

The term “cultured meat” has become a bit of a buzzword for the health food industry. This refers to meat produced in a lab using in vitro cell cultures derived from animal proteins. For many, this “alternative meat” is vital to combatting climate change by removing one of the chief causes of deforestation (making room for cattle ranches) and global warming (bovine methane emissions). For others, it’s an environmentally-friendly way of ensuring food security in an era of climate change.

But what about as a means of feeding astronauts on long-duration missions or living for extended periods beyond Earth? In this case, cultured meat would be a way of fulfilling the dietary needs of astronauts who would otherwise be entirely dependent on vegetable proteins. The possibility is currently being explored by the European Space Agency (ESA) and could be a game-changer for future missions to the Moon, Mars, and beyond!

April 5, 2022April 5, 2022 by Evan Gough

What a Feat! Ingenuity Photographed From Space

It seems like only months ago that the Perseverance Rover landed in Jezero Crater on Mars. But in fact, it’s been there longer than a year. Perseverance has had company during this time; its sidekick, the Ingenuity helicopter, completed 23 flights in Mars’ thin atmosphere so far.

The HiRISE camera on the MRO has captured an image of the rover and the tiny helicopter on Mars as it rests on the surface.