Space Stories: A Swift End, ESA Considers New Approach, and a Real 3-Body System

Posted on by onespaceman2000
Image (Credit): Artist’s rendering of the Swift space telescope in orbit. (NASA)

Here are some recent space-related stories of interest.

—LiveScience: “NASA’s Swift Observatory Ends 22-year Mission to Study the Most Powerful Explosions Since the Big Bang“

A pioneering NASA space telescope is no more. In sad news for Swifties everywhere, the Neil Gehrels Swift Observatory has officially ended its mission after more than 20 years of tracking the most powerful explosions in the universe since the Big Bang. According to a NASA announcement, the Swift team shut down the telescope’s science operations Tuesday (Oct. 20) after the observatory fell too low in its orbit to continue taking reliable measurements of the cosmos. In the coming weeks, Swift will drop even further, eventually passing a point of no return and taking a fiery plunge through Earth’s atmosphere.

—EuroNews: “Europe Weighs €10bn Plan to Launch Its Own Astronauts Ahead of Rome Space Summit“

Europe wants to stop depending on others to send its own astronauts into space. The next key date for deciding how to do that is 15 December in Rome, when the member countries of the European Space Agency (ESA) will meet to discuss the future of space exploration. On the table are multi-billion-euro investments, new technologies and one strategic issue: ensuring that Europe can reach Earth orbit with its own means, without relying exclusively on services provided by foreign companies. The summit, officially the Intermediate Ministerial Meeting 2026, comes at a time of transformation in the sector. Member states will have to assess proposals to strengthen Europe’s role in low Earth orbit, prepare for the post-International Space Station era and build the continent’s presence on the Moon, while also looking towards Mars. The aim is not to abandon international cooperation, but to take part in it with greater autonomy

—South China Morning Post: “Chinese Astronomers Find Real 3-body System. It Is Not What Liu Cixin Thinks“

In author and computer engineer Liu Cixin’s science fiction hit The Three-Body Problem, three suns throw a doomed world into chaos. Chinese astronomers say they have found a real three-star system that is far better behaved. Using FAST, the world’s biggest single-dish radio telescope in southwestern China, the researchers found two dead stars and a “living” one locked in a steady cosmic dance about 7,000 light years from Earth. One of the dead stars is a pulsar that spins more than 300 times a second, about as fast as the blades of a kitchen blender. It whirls around its partner, a white dwarf – the dim, burnt-out core of a smaller star – every eight days.

Note: Here is the podcast version of this post.

Space Stories: Japanese Spacecraft Leaves for Mars, Extreme Exoplanet Weather, and Ghostly Green Stars

Posted on by onespaceman2000
Credit: JAXA

Here are some recent space-related stories of interest.

—Sky & Telescope: “Japan Launches the Martian Moons Exploration Mission“

A two-stage, H3-24L rocket lit up the predawn skies over Tanegashima Space Center on the southern tip of Japan early on Tuesday, October 20th (3:41 p.m. EDT on October 19th), carrying a mission headed for the Red Planet: the Japan Aerospace Exploration Agency (JAXA) Martian Moons eXploration (MMX)…The mission is complex, set to explore the moons of Mars with a series of flybys past Deimos before rendezvous with and landing on Phobos. If all goes well, MMX will collect and return a sample from Phobos and return it to Earth. The agency’s goal is nothing less than to understand the potato-shaped moons’ origins.

—SciTechDaily: “NASA’s James Webb Telescope Reveals a Giant Alien Planet That’s Not Quite Round“

One side of WASP-17b’s atmosphere extends farther into space than the other, giving this intensely hot giant planet an uneven outline. Astronomers have now mapped that distortion with the James Webb Space Telescope (JWST), finding a pattern consistent with predictions of how heat and powerful winds shape a world with permanent day and night sides. WASP-17b is a hot Jupiter, a giant planet that orbits close to its star, about 1,300 light-years from Earth. The study, co-led by Cornell University in the United States and the University of Bristol in the United Kingdom, was published in Nature Astronomy. It marks the first application of a method called transmission strings, developed at Bristol by astrophysicists Dr. David Grant and Dr. Hannah Wakeford.

—ScienceDaily: “Astronomers Discover a Ghostly Green Star Unlike Any Known Before“

Astronomers at the University of Warwick have discovered that white dwarf stars can display a surprising variety of colors, including green, pink, purple, yellow, and cyan. Among their findings is the first known star that would appear genuinely green to the human eye. For most stars, color is closely tied to temperature. Cooler stars appear orange, stars like our Sun look white, and the hottest stars shine pale blue. The relationship is similar to heating a piece of iron, which changes from red to orange and eventually white as its temperature rises.

Note: Here is the podcast version of this post.

Space Stories: Cargo Heading to ISS, Martian Nuclear Reactors, and a Cannibal Star

Posted on by onespaceman2000
Credit: NASA

Here are some recent space-related stories of interest.

—NASA: “NASA’s SpaceX 35th Commercial Resupply Mission Overview”

NASA and SpaceX are targeting no earlier than Tuesday, Oct. 13 to launch scientific investigations, supplies, and equipment to the International Space Station. Loaded with more than 6,300 pounds of supplies, the SpaceX Dragon spacecraft will lift off aboard the company’s Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. Following its arrival to the orbital complex, Dragon will autonomously dock to the space-facing port of the space station’s Harmony module.

—Ideastream: “NASA Glenn is Designing the First U.S. Nuclear Reactor in Space in More Than 60 Years“

Scientists at NASA Glenn in Cleveland are rushing to meet a two-year deadline for launching a small nuclear reactor to power the next Mars mission — the first time the U.S. has launched a nuclear reactor into space in 60 years. The mission to send three mini-helicopters to Mars will use a new nuclear electric propulsion system. NASA Glenn is designing both the reactor and the propulsion system. NASA Glenn nuclear engineer Lindsay Kaldon feels confident both will be ready in time for a federally imposed deadline of 2028. “It’s accomplishable — if that’s a word,” Kaldon said. “It’s something we can do.”

—Science Daily: “MIT Astronomers Catch a Star in a Feast That Could Last Billions of Years“

Astronomers have discovered an unusual star system about 300 light-years from Earth where a small star is gradually consuming a nearby brown dwarf. Instead of swallowing its companion in one dramatic event, the star is steadily pulling material from it, creating a cosmic feeding process that could continue for billions of years…The system, designated ZTF J0440+2325, lies within our Milky Way galaxy approximately 300 light-years away. It is the first observed example of a low-mass star steadily drawing material from another low-mass object.

Note: Here is the podcast version of this post.

Space Stories: The Youngest Exoplanet, a Second Generation Exoplanet, and a Cold Lava Exoplanet

Posted on by onespaceman2000
Image (Credit): A randomly rendered exoplanet. (Image by Adis Resic from Pixabay)

Here are some recent space-related stories of interest related to exoplanets.

—Wired: “Astronomers Confirm Discovery of the Youngest Known Exoplanet Ever”

Newly formed exoplanets are often buried within disks of gas and dust, the leftover building blocks from a planet’s formation, also known as a protoplanetary disk. The difficulty of just locating such a new celestial body is part of what makes the discovery of the exoplanet Elias 2-24b—now the youngest ever confirmed—so exciting…Elias 2-24b is located approximately 450 light-years from Earth. It orbits its star at a distance of approximately 55 astronomical units (one astronomical unit being the average distance between Earth and the sun). Its mass is estimated to be at most 1.9 to 4.0 times that of Jupiter, though researchers believe its volume is likely to be much smaller than our local gas giant. Since its host star is less than 1 million years old, Elias 2-24b is estimated to be similarly young.

—CNN: “First-ever Evidence of a Second-generation Planet Detected Around Dead Star“

In a cosmic first, scientists say they have detected a planet that may have formed from the burned remains of its dead host star. The planet is likely a gas giant orbiting a white dwarf called HS 0209+0832 located about 270 light-years from Earth, according to the authors of a study published Monday in the journal Nature Astronomy. After analyzing observations from NASA’s Hubble Space Telescope and other instruments, the team found chemical evidence that suggests the planet could have condensed from material expelled by the star as it fizzled out of energy and collapsed into a white dwarf.

—Space.com: “Astronomers Discover a Cold Lava Planet That May Resemble Early Earth“

Scientists have discovered a new planet that defies all expectations. It’s a lava world, but it’s also cold. In fact, it’s the coldest lava world we’ve ever seen with an atmosphere. Researchers spotted HD 3167 b, a rocky super-Earth covered in lava, orbiting a star 154 light-years away. This planet orbits so closely to its star that a “year” on the world (one revolution around its star) takes only one Earth day. But it’s not just a lava-covered rock  — it’s the smallest lava world researchers have ever found. And yet, it has managed to hang onto its atmosphere.

Note: Here is the podcast version of this post.

Space Stories: Earth Gives Extra Juice, Starship’s First Orbit, Starliner Returns, and the Missing Moon

Posted on by onespaceman2000
Image (Credit): Artist’s rendering of the Juice spacecraft with Jupiter in the background. (ESA)

Here are some recent space-related stories of interest.

—European Space Agency: “Successful Earth Flyby Improves Juice’s Course to Jupiter”

The European Space Agency’s Jupiter Icy Moons Explorer (Juice) skimmed the very outer edge of Earth’s atmosphere on 28 September, using the gravity of our home planet to alter its route to Jupiter using very little fuel. The flyby deflected Juice by an angle of 20° compared to its pre-flyby path and increased its velocity by 3.5 km/s. In the four weeks before the flyby, spacecraft operators only had to give Juice one tiny nudge (out of six opportunities set aside) to put it on exactly the right approach trajectory to make the most of Earth’s gravity. They have been tracking the spacecraft extra carefully since 17 August, and will continue to do so until 10 October.

—Fox Business News: “SpaceX Launches Starship Into Orbit for First Time Ever But Cuts Mission Short“

SpaceX’s massive Starship rocket blasted off from Texas Monday morning on its most ambitious test flight yet, aiming for a roughly 10-hour mission that would have sent the spacecraft around Earth six times, though the company ultimately decided to end the flight earlier than planned…The launch marks Starship’s 14th test flight and its first attempt to reach orbit, a major step beyond previous suborbital missions that ended with splashdowns about an hour after liftoff.

—CBS News: “NASA Plans Unpiloted Starliner Test Flight After Astronauts Got Stuck at Space Station in 2024“

NASA is working with Boeing to launch an unpiloted Starliner capsule in the December-to-January time frame to test upgrades and improvements ordered in the wake of a 2024 mission that suffered multiple propulsion system failures, stranding two astronauts on the space station for more than nine months. If the unpiloted test flight goes well, NASA and Boeing hope to launch a piloted Starliner flight in the mid-2028 time frame, officials said Monday, incorporating redesigned propulsion system valves, more robust subsystems and other modifications expected to prevent the sort of failures that occurred in 2024. Veteran astronaut Warren “Woody” Hoburg will command the mission.

—Sky & Telescope: “Did Venus Swallow Its Moon?“

It’s a question that has perplexed planetary astronomers for decades: Why does Venus — so similar in size to Earth and not all that far from Earth’s orbit — have no moon, while our planet has such a relatively large one? Earth’s Moon likely formed after a massive collision early in solar system history. But according to calculations, Venus should have been even more likely than Earth to have experienced such a catastrophic crash during its formative years. Yet today it has no moon at all. Now, a series of simulations published in the September 20th Astrophysical Journal, have demonstrated that Venus might once have had a moon — but the planet’s relative proximity to the Sun and its massive atmosphere both created conditions under which no moon could have survived. If there ever was a moon, it would have disintegrated and fallen back to the surface long ago.

Note: Here is the podcast version of this post.