Posts with «space & astronomy» label

Space organizations want the moon to have its own time zone

There's been a resurgence of interest in the moon, now that we're getting closer to re-establishing a foothold on the celestial body. Space agencies and private companies around the world have been scheduling their own lunar missions to take place over the coming years, and it will be quite complicated having to coordinate with each other when they use different time zones. During a meeting at the European Space Agency's ESTEC technology center in the Netherlands last year, space organizations talked about the "importance and urgency of defining a common lunar reference time." In a new announcement, ESA navigation system engineer Pietro Giordano said a "joint international effort is now being launched towards achieving this."

At the moment, different space organizations still use their own time zones for their onboard chronometers and their two-way communications systems. The ESA said doing so "will not be sustainable" in the new era of lunar exploration. Missions from different countries will be doing joint observations, and they may have to communicate with each other even if they're not directly working together if they're on the moon at the same time. 

Deciding on and keeping lunar time won't be easy, though, and they will come with a unique set of challenges. As the ESA notes, "accurate navigation demands rigorous timekeeping," which is why one of the topics the international group of space organizations will have to discuss is if there should be a single organization responsible for maintaining the moon's time zone. Further, they'll have to decide whether to keep lunar time synchronized with Earth's or not, because clocks on the moon run faster based on the satellite's position. While they have a lot of factors to consider, whatever they come up with will have to practical for astronauts orbiting or stepping on the lunar surface in the end. 

Bernhard Hufenbach, a member of the ESA's Directorate of Human and Robotic Exploration's Moonlight Management Team, said: "This will be quite a challenge on a planetary surface where in the equatorial region each day is 29.5 days long, including freezing fortnight-long lunar nights, with the whole of Earth just a small blue circle in the dark sky. But having established a working time system for the moon, we can go on to do the same for other planetary destinations."

🕝How do we tell the time on the Moon? 🤔

A new era of space exploration needs a shared clock.
We are working with @NASA & other international partners towards a common timing system, allowing lunar missions to synch up, interoperate & self-navigate.

👉https://t.co/0S4T2HTaBNpic.twitter.com/wubLGvLv3G

— ESA (@esa) February 27, 2023

This article originally appeared on Engadget at https://www.engadget.com/moon-own-time-zone-esa-113547009.html?src=rss

Russia's replacement Soyuz spacecraft arrives at ISS to bring back MS-22 crew

MS-23, the Soyuz spacecraft Russia sent to bring cosmonauts Sergey Prokopyev and Dmitry Petelin and NASA astronaut Frank Rubio back to Earth, has arrived at the International Space Station. Per Space.com, Russia’s Roscosmos Space Agency announced early Sunday morning that the unmanned vessel docked with the ISS at 7:58PM ET on Saturday evening. As expected, the flight launched from the Baikonur Cosmodrome in Kazakhstan on February 24th.

MS-23 was originally scheduled to launch later this year, but Roscosmos was forced to push up the flight after MS-22 – Prokopyev, Petelin and Rubio’s original return craft – sprung a coolant leak in December following a micrometeoroid strike. The incident put Roscosmos and NASA in a tricky spot. If an emergency broke out on the ISS and the entire crew had to evacuate, it wasn’t clear whether MS-22 could carry its crew safely back to Earth. Roscosmos and NASA eventually settled on a contingency plan that would have seen MS-22 transport Prokopyev and Petelin, while Rubio would have hitched a ride on the SpaceX Crew-5 Dragon. Thankfully, the two agencies weren’t forced to put that plan to the test.

With MS-23 safely docked with the ISS, Prokopyev, Petelin and Rubio will remain at the space station until at least September. The three were originally due to complete their mission in March. In the meantime, Roscomos plans to bring MS-22 back to Earth sometime next month.

James Webb telescope captures ancient galaxies that theoretically shouldn't exist

The James Webb Telescope has been giving us clearer views of celestial objects and exposing hidden features since it became operational last year. Now, according to a study conducted by an international team of astrophysicists, it may also completely change our understanding of the cosmos. 

Upon looking at images taken by the telescope near the Big Dipper, the scientists found six potential galaxies that formed just 500 to 700 million years after the Big Bang. That they could be almost 13 billion years old wasn't what makes them odd, though, it's that they could have as many stars as the Milky Way according to the team's calculations. The scientists explained that they should not exist under current cosmological theory, because there shouldn't be enough matter at the time for the galaxies to form as many stars as ours has. 

What the scientists saw in the images is a few fuzzy but very bright dots of light that look red to our instruments, indicating that they're old. Joel Leja, one of the authors of the study, told Space that scientists typically expect to see young and small galaxies that glow blue when peering into the ancient universe, since they appear to us as "objects which have just recently formed out of the primordial cosmic soup." (Don't forget that it takes time for light to reach Earth, so we're essentially looking back in time when we view telescopic images.) 

"We looked into the very early universe for the first time and had no idea what we were going to find. It turns out we found something so unexpected it actually creates problems for science. It calls the whole picture of early galaxy formation into question," Leja said. James Webb previously captured images of even older galaxies that formed around 350 million years after the Big Bang. But they're tiny and don't challenge our knowledge of astrophysics. 

For these six galaxies to appear old and massive means they were forming hundreds of stars a year shortly after the Big Bang. In comparison, the Milky Way only forms around one to two new stars every year. Further, these potential galaxies are about 30 times more compact in size than ours despite having as many stars. 

The scientists admit that there's a possibility that the fuzzy red dots they saw are something else, such as faint quasars or supermassive black holes. They could also be smaller in reality compared to the projected size the scientists got from their calculations. The team needs more data and to verify their findings through spectroscopy, but they think they could have official confirmation sometime next year

Russia targets February 24th for Soyuz MS-22 crew rescue launch

Russia has set a new date for when it will send a rescue ship to the International Space Station to retrieve the three astronauts whose Soyuz return craft was compromised in December. The country’s Roscosmos space agency told AFP on Saturday it is targeting a February 24th launch for MS-23, the uncrewed Soyuz spacecraft that is scheduled to bring back cosmonauts Dmitri Petelin and Sergey Prokopyev, as well as NASA astronaut Frank Rubio, from the International Space Station.

Roscosmos delayed the mission last Monday after Progress 82, a supply ship that had been docked with the ISS since last October, began leaking coolant over the weekend. Petelin, Prokopyev and Rubio flew to the space station in September, and they were supposed to return on the same Soyuz spacecraft that brought them there. In December, however, the spacecraft sprung a leak, due to an apparent meteoroid strike. One month later, Roscosmos announced it would send a second Soyuz craft to retrieve the three astronauts. The timing of the leaks lead to some speculation that a manufacturing issue was at fault for the Soyuz leak, not an errant space rock as Roscosmos had said. Earlier this week, the agency shared images (seen above) showing the location of the coolant leak and reported micrometeoroid strike. 

NASA's Jeff Arend references the coolant leak on Progress MS-21, which occurred Saturday. Said no conclusions drawn about its cause. After the uncrewed vehicle undocks tonight it will rotate so astronauts can photograph the damage area before Progress enters Earth's atmosphere.

— Eric Berger (@SciGuySpace) February 17, 2023

On Saturday, Roscosmos said it had carefully inspected the rescue ship to ensure it was undamaged and ready for flight. One day earlier, Progress 82 separated from the ISS. Per Space News, video broadcast during the undocking procedure failed to show any obvious signs of damage to the resupply craft. According to NASA, Progress 82 will initiate a deorbit burn at 10:15PM ET tonight. Provided Roscosmos doesn’t delay MS-23’s launch, the spacecraft will arrive at the ISS two days before Space X’s Crew-6 mission is scheduled to launch on February 26th. That flight will bring two NASA astronauts, a United Arab Emirates astronaut and a Russian cosmonaut to the space station.

James Webb telescope captures a Milky Way-like galaxy a billion light-years away

Astronomers at the European Space Agency (ESA) used the James Webb Space Telescope to capture an image of a spiral galaxy that resembles our home, the Milky Way. The star system, LEDA 2046648, sits a billion light-years away from ours in the constellation Hercules; it contains thousands of galaxies, trillions of stars and countless planets.

The ESA released the picture on January 31 (highlighted this week by The NY Times). The space agency described it as a mere calibration image to “verify the telescope’s capabilities as it was prepared for science operations.” ESA astronomers snapped it on May 22, 2022, with the Webb telescope’s Near InfraRed Camera (NIRCam).

That ultra-powerful camera can detect longer infrared wavelengths produced by light from this far away. Redshifting describes the stretching of light’s wavelength as it moves away from us, increasing until it appears redder than expected. It occurs because of the universe’s expansion: Distant systems like LEDA 2046648 keep moving farther from Earth.

European Space Agency

Most of the visible blobs surrounding LEDA 2046648 are also galaxies, although several stars can be discerned by their diffraction spike patterns. Some objects in the image could be as old as 300 million years after the Big Bang. Of course, an image of anything one billion light-years away means we’re viewing the galaxy’s light from a billion years ago. So astronomers are eager to study early galaxies like this one (and even older ones) to help clarify the types of stars that condensed out of the Big Bang — and how supermassive black holes ended up in most galaxies’ centers.

Blue Origin made solar cells by smelting simulated Moon dust

Whether or not Blue Origin puts a lander on the Moon, it might play a key role in sustaining lunar operations. Jeff Bezos' spaceflight company has revealed that it can produce solar cells and transmission wire using simulated Moon regolith. The firm's Blue Alchemist technique uses molten electrolysis to separate the lunar soil's aluminum, iron and silicon from bound oxygen to extract key materials. The process can build solar cells, cover glass and aluminum wire using only sunlight and the reactor's silicon.

This approach would not only save explorers the trouble of importing material, but would be kinder to both the Moon and Earth. There are no carbon-based emissions, no chemicals and no need for water. The resulting solar cells can operate on the Moon for over a decade despite a "harsh" environment, Blue Origin claims.

As Ars Technicaexplains, Blue Origin is pitching this as a solution for NASA's Artemis program and missions to Mars. The space agency could establish bases or other long-term installations while minimizing the environmental impact. While the concept of using regolith to build outposts isn't new, earlier efforts have largely focused on habitats rather than the power supplying those off-world facilities.

Whether or not Blue Origin's tech reaches NASA is another matter, as the company has a mixed relationship with the US administration. While NASA is backing the Orbital Reef space station and will use New Glenn to fly a science mission to Mars, it lost a key lunar lander contract to SpaceX and failed in its challenge of the $2.9 billion deal. As novel as Blue Alchemist tech may be, it's not guaranteed to win business.

A second Russian spacecraft docked at the ISS is leaking coolant

Stop us if you’ve heard this one before, but a Russian spacecraft docked with the International Space Station has sprung a leak. On Saturday morning, Russia’s Roscosmos space agency disclosed on Telegram that a Progress cargo ship docked with the ISS had lost cabin pressure. NASA later said the depressurization was due to a coolant leak.

“The reason for the loss of coolant in the Progress 82 spacecraft is being investigated,” NASA announced. “The hatches between Progress 82 and the station are open, and temperatures and pressures aboard the station are all normal. The crew, which was informed of the cooling loop leak, is in no danger and continuing with normal space station operations.”

Per Space.com, Progress 82 arrived at the ISS on October 28th. Before Saturday's announcement, the spacecraft was scheduled to leave the station on February 17th. It’s unclear if Roscosmos will move forward with that timeline as originally planned. Russia’s Progress spacecraft are designed to burn up in the Earth’s atmosphere after they complete their resupply missions, meaning there’s no way for Roscosmos to investigate the leak on the ground. The timing of the discovery comes on the same day that another Progress spacecraft successfully docked with the ISS, and less than two months after another Russian spacecraft sprung a leak at the space station.

In December, Russia’s Soyuz MS-22 spacecraft began leaking coolant just as cosmonauts Dmitri Petelin and Sergey Prokopyev were preparing for a nearly seven-hour spacewalk. Roscosmos later blamed the incident on an apparent meteoroid strike. Unless there’s an emergency at the ISS, Roscosmos has deemed the spacecraft unfit to transport humans. The agency will launch another Soyuz craft later this month to bring Petelin and Prokopyev, as well as NASA astronaut Frank Rubio, back to Earth.

Ars Technica’s Eric Berger points out, the Progress incident raises doubts about whether Soyuz MS-22 was actually hit by a micrometeorite. Russia never released images of the impact, and the country’s space program has a history of recent issues. In 2021, for instance, Roscosmos blamed a software bug on the Nauka misfiring that temporarily moved the ISS out of its usual orientation.

NASA picks Blue Origin's New Glenn to fly a science mission to Mars

NASA has selected Blue Origin's New Glenn, the company's heavy-lift orbital launch vehicle that has yet to go on its first launch, for a science mission to Mars. As Reuters notes, it's also the company's first interplanetary NASA contract. The mission is called Escape and Plasma Acceleration and Dynamics Explorers or ESCAPADE, and it was designed to study the planet's magnetosphere using twin spacecraft. NASA is targeting a late 2024 launch for the mission, which means we won't have to wait too long to finally see the New Glenn in action — if the Jeff Bezos-owned space corp can prevent further development delays, that is.

The New Glenn vehicle is the company's answer to SpaceX's Falcon Heavy and other company's heavy-lift vehicles. Blue Origin initially targeted a 2020 date for its first launch — and NASA approved it for future unmanned scientific and exploration missions that year — but the event kept getting pushed back. It was moved to 2021 and then to 2022. By the end of March last year, Jarrett Jones, Blue Origin's SVP for New Glenn, admitted that the vehicle wasn't going to fly for the first time in 2022 and that the company was in the process of setting a new date. 

NASA has granted Blue Origin the contract for ESCAPADE under the Venture-Class Acquisition of Dedicated and Rideshare (VADR) program, which was designed to foster the growth of commercial launch services in the US. The agency intends to use launch vehicles from program participants specifically for "small satellites and Class D payloads" that can tolerate higher risk. In other words, VADR contracts are meant for lower-cost missions. "By using a lower level of mission assurance, and commercial best practices for launching rockets, these highly flexible contracts help broaden access to space through lower launch costs," NASA said in its announcement of New Glenn's selection. 

The ESCAPADE mission will launch from Space Launch Complex-36 at Cape Canaveral Space Force Station in Florida. It will take about 11 months for the mission to reach the red planet. After that, it will take a few more months for the twin spacecraft to reach the orbit ideal for gathering information about the Martian magnetosphere. The data it will provide can help give scientists a better understanding of space weather, so that safeguards could be put in place to better protect astronauts and satellites in our continued exploration of outer space. 

SpaceX will attempt Starship orbital test in March, says Elon Musk

SpaceX could attempt to complete Starship’s long-awaited orbital test flight as early as next month, according to Elon Musk. Responding on Saturday to a question from one of his Twitter followers, Musk said the private space firm is targeting a March launch attempt. “If remaining tests go well, we will attempt a Starship launch next month,” he wrote.

If remaining tests go well, we will attempt a Starship launch next month

— Elon Musk (@elonmusk) February 4, 2023

While the date of Starship’s orbital test flight has been a moving target for much of the past year and a half, there’s reason to believe next month could see the rocket finally fly. In January, Starship successfully completed its first-ever stacked fueling test. The “wet dress rehearsal” saw SpaceX load both stages of the vehicle with more than 10 million pounds of liquid oxygen and methane fuel. Critically, the company also ran through some of the countdown procedures it will need to complete on launch day.

Among the tests SpaceX still needs to carry out, the most crucial is a static firing of all of the Super Heavy stage’s 33 Raptor engines. To date, the company has never ignited more than 14 of the engines at once. That will need to change for SpaceX to obtain the go-ahead for an orbital test flight from the Federal Aviation Administration. As of the end of January, there were signs SpaceX was preparing to carry out the static test fire as early as the first week of February. That didn't happen. However, Musk's comment would seem to indicate SpaceX will attempt the test sooner rather than later.

SpaceX astronauts will receive the Congressional Space Medal of Honor

Vice President Kamala Harris will today award the Congressional Space Medal of Honor for the first time since 2006. The recipients are Doug Hurley and Bob Behnken, who became the first astronauts to fly to space on a crewed SpaceX mission in 2020. The pair, who traveled to the International Space Station and stayed there for almost two months, will receive the honor for their bravery.

Hurley and Behnken were part of the first crewed spaceflight from US soil since the last Space Shuttle mission in 2011. They both also flew on the Space Shuttle, and Hurley was on the program's final flight.

Hurley and Behnken's Demo-2 mission was the first crewed flight under NASA’s Commercial Crew Program. Five other SpaceX crews have since flown to the ISS.

The Congressional Space Medal of Honor is typically given to mark a first in space travel, as The Washington Post notes. Previous recipients include Neil Armstrong, Alan Shepard (the first American to travel to space), John Glenn (the first American in orbit) and Frank Borman (commander of Apollo 8, the first lunar orbit mission). The award was also granted posthumously to the crew of Apollo 1 and those who died aboard the Challenger and Columbia shuttles.