Posts with «space & astronomy» label

ESA will try to fetch data from China's Mars rover with a new method: listening

Next month on Mars, the ESA and China's National Space Administration (CNSA) will try something that's never been attempted before in space: Sending data from a planet-based rover to an orbiter that it can't receive any messages from. Specifically, China's selfie-taking Zhurong rover, which has been on the Red Planet since May, will try to shoot data over to the ESA's Mars Express Orbiter. 

As the ESA explains, Zhurong can't actually receive any communications from the Express Orbiter, due to a radio incompatibility. That means it can't hear the hail signal sent from the orbiter, which is typically what a rover waits for before it starts sending out data. Instead, next month Mars and the ESA will attempt a new method that's previously only been tested on Earth. During five tests, Zhurong will send a signal blindly into space, and the Mars Express will listen for that signal and any potential data.

"If [Mars Express] detects the magic signal, the radio will lock on to it and begin recording any data," ESA's Josh Tapley writes. "At the end of the communication window, the spacecraft will turn to face Earth and relay these data across space the same way it does for other scientific Mars missions. When the data arrive at ESOC, they will be forwarded on to the Zhurong team for processing and analysis."    

It's not unusual for rovers to send data to foreign orbiter — that's commonly been seen as a smart backup method — but this test opens the door for communication between incompatible systems. That'll be useful if China has any issues with its Tianwen-1 orbiter down the line, or if the US and other countries need help in turn. 

Blue Origin announces plans for a commercial space station

Blue Origin has more ambitious plans than simply space tourism. Today, the spaceflight company owned by Jeff Bezos announced that it is working on creating its very own space station as well. Called Orbital Reef, it promises to be something of an industrial and commercial hub, and is meant to start operating in the second half of this decade. 

It will be developed, owned and operated in partnership with Sierra Space, a subsidiary of the Sierra Nevada corporation. Sierra Space is perhaps better known for Dream Chaser, a spacecraft that’s set to begin operating in 2022 and carry cargo to the International Space Station. Orbital Reef is also backed by Boeing, Redwire Space, Genesis Engineering Solutions and Arizona State University. The company hopes to use Boeing’s Starliner and Sierra Space’s aforementioned Dream Chaser to ferry both cargo and passengers to Orbital Reef.

Think of Orbital Reef as essentially a “business park,” but in space. In a press release, Blue Origin said that the destination “will offer research, industrial, international, and commercial customers the cost competitive end-to-end services they need including space transportation and logistics, space habitation, equipment accommodation, and operations including onboard crew.” Anyone who wants to “establish their own address in orbit” can do so.

Blue Origin

Blue Origin said that Orbital Reef would be habitable for up to 10 people, which is almost as much as that of the International Space Station. It will feature “human-centered space architecture” with “world-class services and amenities.” There will be multiple ports for visiting spacecraft and modules. Orbital Reef will apparently feature an open system that will enable any customer or nation to use it. As the market for such facilities grows, Blue Origin promises that Orbital Reef will scale the amenities and utilities to match.

“Seasoned space agencies, high-tech consortia, sovereign nations without space programs, media and travel companies, funded entrepreneurs and sponsored inventors, and future-minded investors all have a place on Orbital Reef,” said the company in a press release.

“For over sixty years, NASA and other space agencies have developed orbital space flight and space habitation, setting us up for commercial business to take off in this decade,” said Brent Sherwood, Senior Vice President of Advanced Development Programs for Blue Origin. “We will expand access, lower the cost, and provide all the services and amenities needed to normalize space flight. A vibrant business ecosystem will grow in low Earth orbit, generating new discoveries, new products, new entertainments, and global awareness.”

Blue Origin’s only successful project is a suborbital tourist program that sends passengers to the edge of space (and back) on the New Shepard. It has already flown eight people, which includes Bezos as well as Star Trek’s William Shatner. Other projects, such as the New Glenn rocket (which the company hopes to use to launch some of Orbital Reef’s modules) and the Blue Moon lunar lander are still in development. 

Astronomers directly observe one of the youngest planets to date

Astronomers have spotted young planets before, but rarely this young — or with such easy observation. As CBS Newssays, a University of Hawaii-led team has discovered 2M0437b, one of the youngest planets ever found at 'just' several million years old. The baby planet was found in the Taurus Cloud "nursery" and young enough that it's still emanating lava-like heat from its birth.

Importantly, this is also a very rare chance at directly observing an infant world. Researchers will still need to use special optics to compensate for Earth's atmosphere, but they won't have to use the host star or other tricks to study the planet. It helps that 2M0437b is about one hundred times further from its star than Earth is from the Sun, reducing the chances for interference.

The scientists first spotted the planet in 2018 using the Subaru Telescope, but spent the next three years using the Keck Observatory and other Hawaii telescopes to track the planet and confirm it was tied to its host.

Future observations could shed more light on planetary formation. It might not take much longer to glean more details, either. The team hoped the imminent James Webb Space Telescope could help detect atmospheric gases and newly forming moons. As significant as 2M0437b might be now, it could be more important going forward.

SpaceX's SN20 Starship prototype completes its first static fire test

SpaceX has taken a major step towards sending the Starship to orbit. On Thursday night, the private space corporation has conducted the SN20 Starship prototype's first static fire test as part of its preparation for the spacecraft's launch. According to Space, the SN20 is currently outfitted with two Raptor engines: A standard "sea-level" Raptor and a vacuum version designed to operate in space. At 8:16PM Eastern time on Thursday, the company fired the latter. SpaceX then revealed on Twitter that it was the first ever firing of a Raptor vacuum engine integrated onto a Starship.

First firing of a Raptor vacuum engine integrated onto a Starship pic.twitter.com/uCNAt8Kwzo

— SpaceX (@SpaceX) October 22, 2021

Around an hour after that, the SN20 lit up yet again in a second static fire test that may have involved both Raptor engines. The SN20 will eventually have six Raptors — three standard and three vacuum — and will be the first prototype to attempt an orbital launch. A Starship launch system is comprised of the Starship spacecraft itself and a massive first-stage booster called the Super Heavy. Both are designed to be reusable and to carry large payloads for trips to low and higher Earth orbits. It can also eventually be used for longer trips to the Moon and to Mars. 

SpaceX doesn't have a date for the SN20 test flight yet, but the plan is to launch the vehicle with the Super Heavy known as Booster 4 from the company's Boca Chica site. The booster will splash down in the Gulf of Mexico, while the SN20 will continue its journey towards orbit. 

Russian crew returns from shooting the first feature film on the ISS

Shooting for the first feature-length movie in space has wrapped. Space.comreports Russian actress Yulia Pereslid, producer Klim Shipenko and cosmonaut Oleg Novitskiy have returned to Earth after the first two spent 12 days filming their movie The Challenge aboard the International Space Station. The three left the ISS in a Soyuz spacecraft at 9:14PM Eastern on October 16th and landed in Kazakhstan just a few hours later, at 12:35AM.

Pereslid and Shipenko arrived on October 5th through an agreement between the Russian space agency Roscosmos, the TV network Channel One and the production studio Yellow, Black and White. Novitskiy had been there since April 9th as part of his regular duties, although he also played a key role — the movie has Pereslid play a surgeon who makes an emergency visit to the ISS to operate on the cosmonaut.

The filming required significant sacrifices for some of the ISS crew. NASA astronaut Mark Vande Hei and Russian cosmonaut Pyotr Dubrov were originally slated to return aboard the Soyuz capsule, but both have had their stays extended by six months to accommodate the film producers. Vande Hei will set a record for the longest spaceflight by a US astronaut as a result, spending exactly one year in orbit. Pereslid also broke ground as the first professional actor to visit space, beating William Shatner by roughly a week.

It will be a while before The Challenge is ready to watch, and it's safe to say the production is aimed primarily at a Russian audience. It's a major milestone for private uses of space, though, and hints at a future when Tom Cruise and other stars are frequently blasting off to produce shows in orbit.

A Russian trio said farewell to the station crew and closed the Soyuz MS-18 crew ship hatch at 4:41pm ET today. They undock at 9:14pm this evening. More... https://t.co/Hwwr4AEUI7pic.twitter.com/aXFOtG2H1O

— International Space Station (@Space_Station) October 16, 2021

NASA launches mission to explore Solar System 'fossils'

One of the more important missions to study the early Solar System is now underway. NASA has launched Lucy, a robotic spacecraft that will be the agency's first to explore the Trojan asteroids trapped near Jupiter's Lagrange points. They're considered "fossils" of planetary formation that will help understand the Solar System's evolution, much as Lucy the australopithecus helped humans understand their ancestors.

The spacecraft detached from a ULA Atlas V rocket about an hour after liftoff, successfully deploying its two 24-foot solar arrays. The vehicle is currently charging its batteries as it begins the first leg of its journey, an orbit around the Sun as it prepares for its first gravity assist around Earth in October 2022.

To call this a long mission would be an understatement. Lucy will return to Earth for another gravity assist in 2024, and won't see any asteroids until it swings by the Donaldjohanson asteroid (near the main asteroid belt) in 2025. The probe first visits its first swarm of Trojan asteroids, ahead of Jupiter, in 2027. It will then make four flybys before visiting Earth for a third gravity assist in 2031. It will finally visit the second swarm of asteroids in 2033.

You won't have to be quite so patient for every asteroid mission, at least. NASA will launch another explorer, Psyche, in 2022. The vehicle will arrive at the metallic asteroid (16) Psyche in 2026 and spend 21 months determining whether it represents the exposed core of an early planet or 'just' unmelted material. Lucy is the more ambitious of the two projects, though, and it may pay extra dividends if it sheds light on how the Solar System came to be.

Planet orbiting a dead star previews our own solar system's fate

Scientists have spotted a Jupiter-like exoplanet orbiting a dead star that was once like our Sun, The New York Times has reported. According to a paper in the journal Nature, the white dwarf star and planet around 6,500 light years away provides a preview of what will happen to our own solar system in approximately 5 billion years. 

When a yellow dwarf star like our sun exhausts its helium supply, it expands into a red giant and incinerates its inner planets (bye-bye, Earth, Mars, Venus and Mercury). It then contracts from its own gravity into a white dwarf, a dim Earth-sized star with about half its original mass. Though the fate of inner planets is sealed, scientists aren't exactly sure what happens to planets farther away, like Jupiter and Uranus.

Using the Keck II telescope at the W. M. Keck observatory in Hawai'i, a team of researchers spotted a planet around 1.4 times the size of Jupiter orbiting a dim white dwarf star (about 60 percent the size of the Sun) in a Jupiter-like orbit. They discovered it using a technique called gravitational microlensing (thanks, Einstein), possible when a target and a nearer star align with Earth. The nearer star bends the light from the subject, allowing scientists to observe it with a telescope.

The team tried to find the planet's associated star, but eventually concluded that it must be a white dwarf too faint to directly observe. Scientists previously discovered a different Jupiter-like planet around a white dwarf, but its orbit was much closer — so it wasn't a great analog to our own solar system. 

The finding indicates that planets with wide orbits are probably more common than inner planets. It also shows that some of our solar system's worlds may survive the Sun's death. "Earth’s future may not be so rosy because it is much closer to the Sun,” co-author David Bennett said in a statement. "If humankind wanted to move to a moon of Jupiter or Saturn before the Sun fried the Earth during its red supergiant phase, we’d still remain in orbit around the Sun, although we would not be able to rely on heat from the Sun as a white dwarf for very long."

Watch Blue Origin fly William Shatner to space at 8:30AM ET on October 13th

Provided there aren’t any last-minute delays, Star Trek actor William Shatner will fly to the edge of space on October 13th. You can watch the entire flight right here and on Engadget’s YouTube channel. Tune in at around 9:30 to see NS-18 lift off from Blue Origin’s Launch Site One facility near Van Horn, Texas. The mission was originally scheduled to blast off on October 12th but was pushed back due to unfavorable weather conditions.

The upcoming launch comes some three months after Blue Origin successfully completed its first crewed flight on July 20th. If this latest flight is successful, Shatner, at 90, will become the oldest person to have made such a journey. The current record is held by aviation legend Wally Funk, who joined Blue Origin founder Jeff Bezos on the company’s inaugural flight.

Boeing's next Starliner test flight moves to first half of 2022

Those murmurs of lengthy delays for Boeing's next Starliner test flight turned out to be true. Space.comreports Boeing and NASA are now targeting an Orbital Flight Test-2 launch sometime in the first half of 2022. Engineers have narrowed down the likely causes of the oxidizer isolation valve problem that forced the team to scrap the August 2021 launch, but it remains a "complex issue" that requires a "methodical approach" to solve, according to Commercial Crew Program manager Steve Stich.

Boeing has several possible solutions in the works, ranging from small tweaks to the existing crew capsule through to modifying a capsule still in production. The exact launch timing hinges on both the readiness of the hardware itself as well as the rocket manifest and access to the International Space Station.

While this does suggest Starliner is moving forward, the delay further hurts Boeing's chances to compete with SpaceX in crewed capsule missions. SpaceX has already sent two crewed missions to the ISS, and it may have sent two more by the time the Starliner OFT-2 mission lifts off — Elon Musk's outfit will be a seasoned veteran before Boeing is cleared for its first occupied Starliner flight. It could be a long while before the two companies are taking turns ferrying people to orbit.

Hubble telescope helps find six 'dead' galaxies from the early universe

You'd think large galaxies in the early universe would have had plenty of 'fuel' left for new stars, but a recent discovery suggests that wasn't always the case. Astronomers using the Hubble Space Telescope and the Atacama Large Millimeter/Submillimeter Array (ALMA) have found six early galaxies (about 3 billion years after the Big Bang) that were unusually "dead" — that is, they'd run out of the cold hydrogen necessary for star formation. This was the peak period for star births, according to lead researcher Kate Whitaker, so the disappearance of that hydrogen is a mystery.

The team found the galaxies thanks to strong gravitational lensing, using galaxy clusters to bend and magnify light from the early universe. Hubble identified where stars had formed in the past, while ALMA detected cold dust (a stand-in for the hydrogen) to show where stars would have formed if the necessary ingredients had been present.

The galaxies are believed to have expanded since, but not through star creation. Rather, they grew through mergers with other small galaxies and gas. Any formation after that would have been limited at most.

The findings are a testament to the combined power of Hubble and ALMA, not to mention Hubble's capabilities decades after its launch. At the same time, it underscores the limitations of both the technology and human understanding by raising a number of questions. Whitaker noted that scientists don't know why the galaxies died so quickly, or what happened to cut off the fuel. Was the gas heated, expelled or just rapidly consumed? It might take a while to provide answers, if answers are even possible.