In addition to the supermassive black hole at the center of our galaxy, the Milky Way also serves as home to smaller stellar black holes that form when a massive star collapses. Scientists believe there are 100 million stellar black holes in our galaxy alone, but most of them have yet to be discovered. The ones that had already been found are, on average, around 10 times the size of our sun, with the biggest one reaching 21 solar masses. Thanks to the information collected by the European Space Agency's Gaia mission, though, scientists have discovered a stellar black hole that's 33 times the size of our sun, making it the biggest one of its kind we've ever seen in our galaxy so far. It's also relatively close to our planet at around 1,926 light-years away. 

Gaia BH3, as it's now called, was first noticed by a team of ESA scientists poring over data from the mission to look for anything unusual. An old giant star from the nearby Aquila constellation caught their attention with its wobbling, leading to the discovery that it was orbiting a massive black hole. BH3 was hard to find despite being so close — it's now the second closest known black hole to our planet — because it doesn't have celestial bodies close enough that could feed it matter and make it light up in X-ray telescopes. Before its discovery, we'd only found black holes of comparable size in distant galaxies. 

The ESA team used data from ground-based telescopes like the European Southern Observatory to confirm the size of the newly discovered celestial body. They also published a paper with preliminary findings before they release a more detailed one in 2025, so that their peers could start studying Gaia BH3. For now, what they know is that the star orbiting it has very few elements heavier than hydrogen and helium, and since stellar pairs tend to have similar compositions, the star that collapsed to form BH3 could've been the same. 

Scientists have long believed that it's the metal-poor stars that can create high-mass black holes after they collapse, because they lose less mass in their lifetimes. In other words, they'd theoretically still have a lot of materials left by the time of their death to form a massive black hole. This was apparently the first evidence we've found that links metal-poor stars with massive stellar black holes, and it's also proof that older giant stars developed differently than the newer ones we see in our galaxy. 

We'll most likely see more detailed studies about binary systems and stellar black holes that use data from BH3 and its companion star in the future. The ESA believes that BH3's discovery is just the beginning, and it's going to be the focus of more investigations as we seek to unravel the mysteries of the universe.

On March 8, a piece of space debris plunged through a roof in Naples, FL, ripped through two floors and (fortunately) missed the son of homeowner Alejandro Otero. On Tuesday, NASA confirmed the results of its analysis of the incident. As suspected, it’s a piece of equipment dumped from the International Space Station (ISS) three years ago.

NASA’s investigation of the object at Kennedy Space Center in Cape Canaveral confirmed it was a piece of the EP-9 support equipment used to mount batteries onto a cargo pallet, which the ISS’ robotic arm dropped on March 11, 2021. The haul, made up of discarded nickel-hydrogen batteries, was expected to orbit Earth between two to four years (it split the difference, lasting almost exactly three) “before burning up harmlessly in the atmosphere,” as NASA predicted at the time. Not quite.

The roof-piercing debris was described as a stanchion from NASA flight support equipment used to mount the batteries onto the cargo pallet. Made of the metal alloy Inconel, the object weighs 1.6 lbs and measures 4 inches tall and 1.6 inches in diameter.

Otero told Fort Meyers CBS affiliate WINK-TV that he was on vacation when his son told him that an object had pierced their roof. “I was shaking,” he said. “I was completely in disbelief. What are the chances of something landing on my house with such force to cause so much damage. I’m super grateful that nobody got hurt.”

NASA says it will investigate the equipment dump’s jettison and re-entry to try to figure out why the object slammed into Otero’s home instead of disintegrating into flames. “NASA specialists use engineering models to estimate how objects heat up and break apart during atmospheric re-entry,” the space agency explained in a news release. “These models require detailed input parameters and are regularly updated when debris is found to have survived atmospheric re-entry to the ground.”

Most space junk moves extremely fast, reaching up to 18,000 mph, according to NASA. It explains, “Due to the rate of speed and volume of debris in LEO, current and future space-based services, explorations, and operations pose a safety risk to people and property in space and on Earth.”

On Tuesday, The White House published a policy memo directing NASA to create a new time standard for the Moon by 2026. Coordinated Lunar Time (LTC) will establish an official time reference to help guide future lunar missions. It arrives as a 21st-century space race emerges between (at least) the US, China, Japan, India and Russia.

The memo directs NASA to work with the Departments of Commerce, Defense, State, and Transportation to plan a strategy to put LTC into practice by December 31, 2026. International cooperation will also play a role, especially with signees of the Artemis Accords. Established in 2020, they’re a set of common principles between a growing list of (currently) 37 countries that govern space exploration and operating principles. China and Russia are not part of that group.

“As NASA, private companies, and space agencies around the world launch missions to the Moon, Mars, and beyond, it’s important that we establish celestial time standards for safety and accuracy,” OSTP Deputy Director for National Security Steve Welby wrote in a White House press release. “A consistent definition of time among operators in space is critical to successful space situational awareness capabilities, navigation, and communications, all of which are foundational to enable interoperability across the U.S. government and with international partners.”

Einstein’s theories of relativity dictate that time changes relative to speed and gravity. Given the Moon’s weaker gravity (and movement differences between it and Earth), time moves slightly faster there. So an Earth-based clock on the lunar surface would appear to gain an average of 58.7 microseconds per Earth day. As the US and other countries plan Moon missions to research, explore and (eventually) build bases for permanent residence, using a single standard will help them synchronize technology and missions requiring precise timing.

“The same clock that we have on Earth would move at a different rate on the moon,” NASA space communications and navigation chief Kevin Coggins told Reuters. “Think of the atomic clocks at the U.S. Naval Observatory (in Washington). They’re the heartbeat of the nation, synchronizing everything. You’re going to want a heartbeat on the moon.”

NASA

The White House wants LTC to coordinate with Coordinated Universal Time (UTC), the standard by which all of Earth’s time zones are measured. Its memo says it wants the new time zone to enable accurate navigation and scientific endeavors. It also wants LTC to maintain resilience if it loses contact with Earth while providing scalability for space environments “beyond the Earth-Moon system.”

NASA’s Artemis program aims to send crewed missions back to the Moon for the first time since the Apollo missions of the 1960s and 70s. The space agency said in January that Artemis 2, which will fly around the Moon with four people onboard, is now set for a September 2025 launch. Artemis 3, which plans to put humans back on the Moon’s surface, is now scheduled for 2026.

In addition to the US, China aims to put astronauts on the Moon before 2030 as the world’s two foremost global superpowers take their race to space. Although no other countries have announced crewed missions to the lunar surface, India (which put a module and rover on the Moon’s South Pole last year), Russia (its mission around the same time didn’t go so well), the United Arab Emirates, Japan, South Korea and private companies have all demonstrated lunar ambitions in recent years.

In addition to enabling further scientific exploration, technological establishment and resource mining, the Moon could serve as a critical stop on the way to Mars. It could test technologies and provide fuel and supply needs for eventual human missions to the Red Planet.

A budding startup called Interlune is trying to become the first private company to mine the moon’s natural resources and sell them back on Earth. Interlune will initially focus on helium-3 — a helium isotope created by the sun through the process of fusion — which is abundant on the moon. In an interview with Ars Technica, Rob Meyerson, one of Interlune’s founders and former Blue Origin president, said the company hopes to fly its harvester with one of the upcoming commercial moon missions backed by NASA. The plan is to have a pilot plant on the moon by 2028 and begin operations by 2030, Meyerson said.

Interlune announced this week that it’s raised $18 million in funding, including $15 million in its most recent round led by Seven Seven Six, the venture firm started by Reddit co-founder Alexis Ohanian. The resource it’s targeting, helium-3, could be used on Earth for applications like quantum computing, medical imaging and, perhaps some day down the line, as fuel for fusion reactors. ​​Helium-3 is carried to the moon by solar winds and is thought to remain on the surface trapped in the soil, whereas when it reaches Earth, it’s blocked by the magnetosphere.

Interlune aims to excavate huge amounts of the lunar soil (or regolith), process it and extract the helium-3 gas, which it would then ship back to Earth. Alongside its proprietary lunar harvester, Interlune is planning a robotic lander mission to assess the concentration of helium-3 at the selected location on the surface. 

Interlune

“For the first time in history,” Meyerson said in a statement, “harvesting natural resources from the Moon is technologically and economically feasible.” The founding team includes Meyerson and former Blue Origin Chief Architect Gary Lai, Apollo 17 astronaut Harrison H. Schmitt, former Rocket Lab exec Indra Hornsby and James Antifaev, who worked for Alphabet’s high-altitude balloon project, Loon. 

SpaceX will be hoping the third time's the charm as it attempts another test launch of its Starship rocket. The previous two efforts ended in failure, though Starship did reach space on the second go-round. A 110-minute launch window for the latest attempt opens at 8AM ET. A livestream covering the launch just kicked off at about 8:50AM ET, and you can follow it here on X. According to the SpaceX X feed, the current target liftoff is set for 9:25AM ET. 

The Federal Aviation Authority authorized the SpaceX Starship Super Heavy Orbital Flight Test 3 on Wednesday afternoon. The agency said in a statement to Engadget that Space X "met all safety, environmental, policy and financial responsibility requirements." 

The FAA grounded Starship for several weeks before the second test flight until the company took 63 "corrective actions." The first launch caused a fire in a state park and led to a lawsuit from environmental groups.

Along with building on top of the previous tests, there are a number of "ambitious" goals SpaceX has in mind for this launch. The company is aiming to carry out the first re-light of a Raptor engine in space, along with ensuring the successful ascent burn of both stages, opening and closing the payload door and conducting a controlled reentry. The spacecraft will fly on a new trajectory and it's expected to splashdown in the Indian Ocean. SpaceX says the updated flight path will afford it the chance to try out new things like engine burns in space while prioritizing public safety.

A startup company called Space One launched a rocket earlier in hopes of becoming the first private entity in Japan to put a satellite in orbit. Unfortunately, its attempt ended in a fiery explosion, mere seconds after lift off at 11AM local time. Its 60-foot-long rocket Kairos launched from the company's Space Port Kii in Wakayama, a prefecture south of Osaka in Japan's Kansai region. Space One director Mamoru Endo told reporters at a conference that the rocket's automated system detected an anomaly five seconds after liftoff and triggered its self-destruct function. The company has yet to figure out what that anomaly is and will be investigating the incident for answers. 

Kairos was carrying payload for the Cabinet Satellite Intelligence Center, which collects and analyzes imagery information for the Japanese government. That satellite was supposed to be an alternative to an existing Japanese satellite monitoring military facilities in and rocket launches from North Korea. Masakazu Toyoda, the company's president, said during the conference that Space One is "prepared to take up the next challenge." He also emphasized how common failed launches are in space travel. And that is true — SpaceX, for instance, lost several Starship vehicles over the past few years when they blew up during testing. 

Space One, backed by Canon and aerospace manufacturer IHI, eventually hopes to offer satellite launch services using small rockets, which it says "offer greater scheduling flexibility than large ones." It's also aiming to provide the "world's shortest lead time from contractual engagement to launch, as well as the world's most frequent launching schedule" while also minimizing the costs of putting satellites into orbit. Since the company must be able to stage a successful launch before customers come knocking on its doors, it will most likely announce its next attempt in the near future. 

Last year, Japanese company ispace also failed to become the first private company to land on the moon when it lost contact with its Hakuto-R lander. But the country's space agency, JAXA, is doing better than its private counterparts: Its SLIM lunar lander successfully touched down in January and is expected to resume its operations in late March after the lunar night is over. 

The Odysseus spacecraft made by Houston-based Intuitive Machines has successfully landed on the surface of the moon. It marks the first time a spacecraft from a private company has landed on the lunar surface, and it’s the first US-made craft to reach the moon since the Apollo missions.

Odysseus was carrying NASA instruments, which the space agency said would be used to help prepare for future crewed missions to the moon under the Artemis program. NASA confirmed the landing happened at 6:23 PM ET on February 22. The lander launched from Earth on February 15, with the help of a SpaceX Falcon 9 rocket.

According to The New York Times, there were some “technical issues with the flight” that delayed the landing for a couple of hours. Intuitive Machines CTO Tim Crain told the paper that “Odysseus is definitely on the moon and operating but it remains to be seen whether the mission can achieve its objectives.” Odysseus has a limited window of about a week to send data back down to Earth before darkness sets in and makes the solar-powered craft inoperable.

Intuitive Machines wasn’t the first private company to attempt a landing. Astrobotic made an attempt last month with its Peregrine lander, but was unsuccessful. Intuitive Machines is planning to launch two other lunar landers this year.

Astroscale’s ADRAS-J spacecraft, a demonstration satellite that could inform future space junk cleanup efforts, is now in orbit after a successful launch from New Zealand on Sunday. The satellite was sent to space atop an Electron rocket from Rocket Lab. Its mission, which was selected by Japan’s space agency (JAXA) for Phase I of the Commercial Removal of Debris Demonstration program, will see ADRAS-J rendezvous with an old Japanese rocket upper stage that’s been in orbit since 2009.

The accumulation of waste in Earth’s orbit from decades of spaceflight is an issue of growing concern, and space agencies around the world are increasingly working to address it, in many cases tapping private companies to develop potential solutions. One of the most effective ways to deal with space junk could be to deorbit it, or move it to a lower altitude so it can burn up in Earth’s atmosphere. ADRAS-J will be the first to target a piece of existing large debris and attempt to safely approach and characterize it, relying on ground-based data to hone in on its position.

Over the next few months, it’ll make its way to the target and eventually try to get close enough to take images and assess its condition to determine if it can be removed. “ADRAS-J is officially on duty and ready to rendezvous with some space debris!” the company tweeted. “Let the new era of space sustainability begin!”

Intuitive Machines’ lunar lander is well on its way to the moon after launching without a hitch on Thursday, but it managed to snap a few incredible images of Earth while it was still close to home. The company shared the first batch of images from the IM-1 mission on X today after confirming in an earlier post that the spacecraft is “in excellent health.” Along with a view of Earth and some partial selfies of the Nova-C lander, nicknamed Odysseus, you can even see the SpaceX Falcon 9 second stage falling away in the distance after separation.

Odysseus is on track to make its moon landing attempt on February 22, and so far appears to be performing well. The team posted a series of updates on X at the end of the week confirming the lander has passed some key milestones ahead of its touchdown, including engine firing. This marked “the first-ever in-space ignition of a liquid methane and liquid oxygen engine,” according to Intuitive Machines.

If extreme challenges are your cup of tea, NASA has the perfect opportunity for you. The space agency put out a call on Friday for volunteers to participate in its second yearlong simulated Mars mission, the Crew Health and Performance Exploration Analog (CHAPEA 2). For the duration of the mission, which will start in spring 2025, the four selected crew members will be housed in a 1,700-square-foot 3D-printed habitat in Houston. NASA is accepting applications on the CHAPEA website from now through April 2. It’s a paid gig, but NASA hasn’t publicly said how much participants will be compensated.

The Mars Dune Alpha habitat at NASA’s Johnson Space Center is designed to simulate what life might be like for future explorers on the red planet, where the environment is harsh and resources will be limited. There’s a crew currently living and working there as part of the first CHAPEA mission, which is now more than halfway through its 378-day assignment. During their stay, volunteers will perform habitat maintenance and grow crops, among other tasks. The habitat also has a 1,200-square-foot sandbox attached to it for simulated spacewalks.

To be considered, applicants must be a US citizen aged 30-55, speak English proficiently and have a master’s degree in a STEM field, plus at least two years of professional experience, a minimum of one thousand hours piloting an aircraft or two years of work toward a STEM doctoral program. Certain types of professional experience may allow applicants without a master’s to qualify too. CHAPEA 2 is the second of three mission NASA has planned for the program, the first of which began on June 25, 2023.