Universe Today

February 6, 2020February 6, 2020 by Matt Williams

SpaceX Has Requested Permission to Fly Starship as Early as March

In September of 2019, SpaceX unveiled the first Starship prototype, the first of several test vehicles that would validate the design of the next-generation spacecraft that would fulfill Musk’s promise of making commercial flights to the Moon and Mars. And while there was a bit of a setback in November of 2019 after the Mk. 1 suffered a structural failure, Musk indicated that the company would be moving forward with other prototypes.

As Musk explained at the time, this would consist of the Mk. 3 prototype conducting an orbital test flight to an altitude of 100 km (62 mi) sometime in 2020. According to recent filings made with the FCC, this test could be happening as early as mid-March and will involve the vehicle launching from the company’s test facility in Boca Chica, Texas, and flying to an altitude of 20 km (12.6 mi) before landing.

February 6, 2020February 6, 2020 by Evan Gough

There Are Winds Blowing On Pluto, Driven by Frozen Nitrogen

NASA's New Horizons spacecraft captured this image of Sputnik Planitia — a glacial expanse rich in nitrogen, carbon monoxide and methane ices — that forms the left lobe of a heart-shaped feature on Pluto’s surface. SwRI scientists studied the dwarf planet’s nitrogen and carbon monoxide composition to develop a new theory for its formation. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Earth and Pluto don’t have much in common. Earth is a vibrant, living world, whereas Pluto is cold, distant and lifeless. But one thing they do have in common is nitrogen. Earth’s atmosphere is about 78% nitrogen, and Pluto’s primary atmospheric constituent is also nitrogen, although the exact percentage is unclear.

On Pluto, where the surface temperature is about 42 Kelvin (-231 Celsius) most of that nitrogen is frozen. A new study says that Pluto’s frozen nitrogen drives the planet’s winds, and shapes its feature surfaces.

February 6, 2020February 6, 2020 by Brian Koberlein

Did Neutrinos Stop The Early Universe From Annihilating Itself?

Illustration of the Big Bang Theory — The Big Bang Theory: A history of the Universe starting from a singularity and expanding ever since. Credit: grandunificationtheory.com

We can create matter from energy in the lab. Particle accelerators do this all the time. When we do, half of what is created is matter and the other half antimatter. There is a symmetry in physics that requires matter and antimatter to appear in equal amounts. But when we look around the universe, what we see is matter. So how did the big bang create all the matter we see without creating an equal amount of antimatter? The answer could be neutrinos.

February 6, 2020February 6, 2020 by Evan Gough

A Meteor Smashed Into Mars in 2005, Making this Crater

A meteorite struck Mars sometime between February and July 2005 and formed this crater. It's the HiRise Picture of the Day for February 5, 2020. Image Credit: NASA/JPL/UoArizona.

NASA has repeatedly imaged the Martian surface, and sometimes a feature appears that wasn’t there in prior images. That’s what happened when a meteorite survived the plunge through Mars’ thin atmosphere sometime between February and July, 2005. It created this impact crater north of Valles Marineris.

February 6, 2020February 6, 2020 by Nancy Atkinson

Record-Setting Space Travelers Return to Earth

The Soyuz MS-13 spacecraft is seen as it lands in a remote area near the town of Zhezkazgan, Kazakhstan with Expedition 61 crew members Christina Koch of NASA, Alexander Skvortsov of the Russian space agency Roscosmos, and Luca Parmitano of ESA (European Space Agency) Thursday, Feb. 6, 2020. Koch returned to Earth after logging 328 days in space --- the longest spaceflight in history by a woman --- as a member of Expeditions 59-60-61 on the International Space Station. Skvortsov and Parmitano returned after 201 days in space where they served as Expedition 60-61 crew members onboard the station. Photo Credit: (NASA/Bill Ingalls)

A trio of space travelers returned to Earth this morning from the International Space Station, including NASA astronaut Christina Koch, who set a record for the longest single spaceflight by a woman, at 326 straight days. Also coming home was ESA astronaut Luca Parmitano, who has now spent a total of 367 days in space (in two missions), more days than any ESA astronaut in history.

The crew of Expedition 61 also included Russian cosmonaut and Soyuz Commander Alexander Skvortsov, who completed his third mission for a total of 546 days in space, placing him 15th on the all-time time-in-space list.

February 5, 2020February 5, 2020 by Evan Gough

Here Comes the Next Satellite Constellation. OneWeb Launches 34 Satellites on Thursday

SpaceX has been garnering all the headlines when it comes to satellite constellations. Their Starlink system will eventually have thousands of tiny satellites working together to provide internet access, though only 242 of them have been deployed so far. But now another company is getting on the action: OneWeb.

February 5, 2020February 5, 2020 by Matt Williams

Anti-Solar Cells Could Generate Electricity at Night

It is a foregone conclusion that if humanity intends to survive the so-called “Anthropocene” we need to make the transition away from fossil fuels and other methods that are unsustainable and amplify our impact on the planet. In this respect, a great deal of research and development is being directed towards “renewable energy.” Of the many methods that are being developed, the biggest contender is and always has been solar power.

Unfortunately, solar power suffers from a number of drawbacks, like the fact that it is only available during the day and favorable weather conditions. However, a new study by researchers from the Institute for Research in Electronics and Applied Physics (IREAP) shows how a special kind of photovoltaic cell could generate power at night. These “anti-solar” cells could revolutionize renewable energy and make it far more proficient.

February 5, 2020February 5, 2020 by Evan Gough

This is What the World Would Look Like if the Oceans Dried Up

Don’t worry. The oceans aren’t going to dry up. At least not any time soon, so no need to add it to the list of things to worry about.

But, what would our planet look like if they did? Dr. James O’Donoghue from JAXA decided to find out.

February 5, 2020February 5, 2020 by Evan Gough

14% of all the Massive Stars in the Universe are Destined to Collide as Black Holes

This illustration shows the merger of two black holes and the gravitational waves that ripple outward as the black holes spiral toward each other. Could black holes like these (which represent those detected by LIGO on Dec. 26, 2015) collide in the dusty disk around a quasar's supermassive black hole explain gravitational waves, too? Credit: LIGO/T. Pyle — This illustration shows the merger of two supermassive black holes and the gravitational waves that ripple outward as the black holes spiral toward each other. Credit: LIGO/T. Pyle

Einstein’s Theory of General Relativity predicted that black holes would form and eventually collide. It also predicted the creation of gravitational waves from the collision. But how often does this happen, and can we calculate how many stars this will happen to?

A new study from a physicist at Vanderbilt University sought to answer these questions.

February 5, 2020February 5, 2020 by Brian Koberlein

Neutrinos Have Been Detected With Such High Energy That The Standard Model Can’t Explain Them

Neutrino detection by the Kamioka Observatory. Credit: Kamioka Observatory/ICRR/The University of Tokyo

Although neutrinos are mysterious particles, they are remarkably common. Billions of neutrinos pass through your body every second. But neutrinos rarely interact with regular matter, so detecting them is a big engineering challenge. Even when we do detect them, the results don’t always make sense. For example, we’ve recently detected neutrinos that have so much energy we have no idea how they are created.