Category: Cosmic Space

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Cosmic Space

How dark is the cosmos? Probe provides a far-out answer

New Horizons probe with galactic disk in background
Artwork shows NASA’s New Horizons probe in deep space. (Credit: NASA / JHUAPL / SwRI / Serge Brunier / Marc Postman / Dan Durda)

We know that deep space is dark, but just how dark is it? Or, put another way, how bright is it? And how much of that brightness comes from galaxies? Astronomers have gotten a clearer answer to those questions, thanks to observations sent back from billions of miles away.

Nine years after its history-making flyby of Pluto, NASA’s New Horizons spacecraft measured the brightness of the distant universe from a vantage point in deep, dark space.

“If you hold up your hand in deep space, how much light does the universe shine on it?” Marc Postman, an astronomer at the Space Telescope Science Institute in Baltimore, asked today in a news release. “We now have a good idea of just how dark space really is.”

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Cosmic Space

NASA picks SpaceX to create a space station killer

Illustration: U.S. Deorbit Vehicle
An artist's conception shows SpaceX's Deorbit Vehicle in action. (Credit: SpaceX)

Spacecraft built by SpaceX have been servicing the International Space Station since 2012, and now NASA has chosen SpaceX to build the spacecraft that’ll take the station down to its doom in 2030.

The space agency announced today that SpaceX has been selected to develop and deliver the U.S. Deorbit Vehicle that will provide the capability to push the station into a fiery but controlled descent through the atmosphere. The deed will have to be done in a way that makes sure any debris falls harmlessly in an unpopulated area — for example, a remote part of the Pacific Ocean known as Point Nemo.

NASA laid out its plan for deorbiting the space station at the end of its operating life two years ago. At the time, mission planners suggested that Russian Progress supply ships or Northrop Grumman’s Cygnus cargo spacecraft might play a part in the denouement.

Today’s announcement makes clear that a SpaceX craft will take on the curtain-closing role. However, NASA will take ownership of the U.S. Deorbit Vehicle once it’s developed, and operate it through the final mission. No astronauts will be aboard the station during the robotically guided re-entry, and the U.S. Deorbit Vehicle is expected to break up along with the rest of the space station.

NASA said the single-award contract has a total potential value of $843 million. Launch service will be covered in a future procurement.

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Cosmic Space

Webb Telescope expands the frontier of early galaxies

JWST image highlighting galaxy JADES-GS-z14-0
An infrared image from the James Webb Space Telescope's NIRCam instrument reveals the galaxy JADES-GS-z14-0 as it existed 290 million years after the big bang. (Credit: NASA / ESA / CSA / STSci / B. Robertson, UCSC / B. Johnson, CfA / S. Tacchella, Cambridge / P. Cargile, CfA)

Astronomers say infrared readings from NASA’s James Webb Space Telescope have revealed a new record-holder for the most distant galaxy observed in the universe — a smudge of stars whose light started its journey a mere 290 million years after the big bang.

The galaxy, known as JADES-GS-z14-0, dethroned the previous champion, which scientists detected in 2022. JADES-GS-z14-0 is thought to be about 40 million years older, based on a detailed analysis of spectroscopic data. Because the age of the universe is estimated at 13.8 billion years, the light from the galaxy took more than 13.5 billion years to reach JWST’s detectors.

Scientists also detected another galaxy, designated JADES-GS-z14-1, that was nearly as distant. And there are likely to be even more distant galaxies still waiting to be discovered.

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Cosmic Space

Halo Space reveals design for stratospheric tour capsule

Cutaway view of Halo Space Aurora capsule
A cutaway illustration shows the layout of Halo Space's Aurora capsule, with a toilet in the center. (Frank Stephenson Design)

If and when passengers climb into Halo Space’s capsule for a ballooning trip to the stratosphere, they’ll find cushy seats, fold-down receptacles for food and drinks, floor-to-ceiling windows that provide an astronaut’s-eye view of the curving Earth below — and a snug toilet to get them through the hours-long flight.

The interior design for Halo’s capsule, dubbed “The Aurora,” was unveiled on April 11 in London by Halo Space CEO Carlos Mira and famed automotive designer Frank Stephenson.

“Passengers will spend up to six hours inside our spaceship, and we want every minute to be unforgettable,” Mira said in a news release. “Frank and his team have created a capsule to enhance our flight experience, utilizing unique resources, design and technology.”

Halo Space is aiming to begin commercial service by 2026 with ticket prices starting at $164,000. It’s one of several companies targeting the stratospheric tourism market, a lineup that also includes World View, Space Perspective, Zero 2 Infinity and Zephalto.

Although these stratospheric tours are typically marketed as spaceflights, they wouldn’t go anywhere near as high as the suborbital rocket ships built by Blue Origin and Virgin Galactic — 20 to 25 miles for Halo Space, as opposed to 50 miles for Virgin Galactic. On the plus side, the trips would be much less expensive, and arguably less risky.

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Cosmic Space

Webb Telescope detects activity within dwarf planets

Makemake and Eris
An artist's conception compares the size of 889-mile-wide Makemake and 1,445-mile-wide Eris. (SWRI Illustration)

They may be dwarf planets, but they’re not dead planets.

NASA’s James Webb Space Telescope has provided scientists with evidence of geothermal activity deep within two far-out dwarf planets, Eris and Makemake.

“We see some interesting signs of hot times in cool places,” Christopher Glein, an expert in planetary geochemistry at the Southwest Research Institute, said this week in a news release. Glein is the lead author of a study analyzing the JWST findings that was recently published by the journal Icarus.

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Cosmic Space

Probes put planets on parade, from Mars to Uranus

JWST infrared image of Uranus
An infrared image from the James Webb Space Telescope shows Uranus and its rings. (NASA / ESA / CSA / STScI / Andrea Luck CC BY)

Fresh imagery from NASA’s James Webb Space Telescope reveals the rings of Uranus in all their infrared glory.

The newly released view of the seventh rock from the sun is just one of the stunning shots of extraterrestrial scenes recently sent back by interplanetary probes. The past few days have also brought noteworthy images of NASA’s Ingenuity helicopter lying dormant on Mars and volcanoes flaring up on a moon of Jupiter.

But wait … there’s more: Research based on readings from NASA’s Cassini spacecraft is turning a spotlight on Mimas, a Saturnian moon that looks like the Death Star from the Star Wars movie. Could Mimas’ icy crust conceal a watery ocean? Stay tuned …

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Cosmic Space

Ingenuity helicopter breaks, ending historic Mars mission

Perseverance rover "selfie" with Ingenuity helicopter in the background
A "selfie" captured by NASA's Perseverance rover in 2021 shows the Ingenuity helicopter ion Mars. (NASA / JPL / MSSS)

Nearly three years after the first-ever takeoff from the surface of Mars, NASA’s Ingenuity helicopter has landed for the last time.

The innovative mini-copter was brought to the Red Planet in 2021 as an experimental piggyback payload tucked beneath the Perseverance rover, and conducted 72 reconnaissance flights that racked up 11 miles of total distance and two hours of total flight time.

Not bad for a 4-pound gadget that was designed to fly only five times during a 30-day primary mission.

In a video tribute released today, NASA Administrator Bill Nelson called Ingenuity “the little helicopter that could.”

“It kept saying, ‘I think I can, I think I can,'” Nelson said. “Well, it has now taken its last flight on Mars.”

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Cosmic Space

NASA reschedules Artemis moon landing for 2026

Artemis 2 looking at Orion moon ship
Artemis 2 crew members check out their Orion spacecraft during testing at NASA’s Kennedy Space Center in Florida. (NASA Photo / Kim Shiflett)

NASA has added another year’s delay to its plan for landing astronauts on the moon: The Artemis 2 trip around the moon is now scheduled for 2025, setting the stage for an Artemis 3 mission in 2026 that would see humans step onto lunar surface for the first time in 54 years.

The reasons behind the postponement have to do with safety concerns that arose in the wake of the uncrewed Artemis 1 round-the-moon mission in 2022. That flight was seen as a shakedown cruise for NASA’s Space Launch System and Orion spacecraft.

When NASA and its industry partners analyzed the results of Artemis 1, they found several issues that required more time to resolve — including higher-than-expected levels of erosion in Orion’s heat shield, deficiencies in the battery and electrical system, and problems with some of the components used in Orion’s life support system.

“Safety is our top priority,” NASA Administrator Bill Nelson said today in a teleconference. “And to give Artemis teams more time to work through the challenges with first-time developments, operations and integration, we’re going to give more time on Artemis 2 and 3.”

Artemis 2 is now due to send three Americans and a Canadian astronaut on a 10-day trip around the moon in an Orion capsule in September 2025 rather than late 2024.

The Artemis 3 mission, which would use Orion as well as a modified SpaceX Starship lander to put a yet-to-be-named crew of astronauts on the moon’s surface near the south pole, is now scheduled for September 2026 rather than late 2025.

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Cosmic Space

SpaceX’s Starship gets farther on its second test flight

Starship liftoff from Texas launch pad
An aerial view via SpaceX's livestream shows the launch of the Starship / Super Heavy test flight. (SpaceX via X / Twitter)

SpaceX’s Starship and its Super Heavy booster blew through the primary objective for their second test flight today, but both rocket stages blew up sooner than the company hoped.

SpaceX took the day as a win — based not only on a successful liftoff from its South Texas launch pad a little after 7 a.m. CT (5 a.m. PT), but also on the successful execution of a hot-stage separation maneuver two and a half minutes after launch.

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Cosmic Space

The air of an alien world lifts hopes of detecting life

Blue exoplanet and red parent star in space
An artist's conception shows the exoplanet K2-18 b. (NASA / CSA / ESA / STScI / Cambridge U.)

Readings from NASA’s James Webb Space Telescope confirm the presence of carbon-based molecules including methane and carbon dioxide in the atmosphere of a distant planet known as K2-18 b — which supports previous suggestions that it might be the kind of ocean-covered world capable of harboring marine life.

K2-18 b, which was first detected in 2015 using data from NASA’s now-retired Kepler space telescope, lies in the habitable zone of a star system that’s about 120 light-years away in the constellation Leo. It’s about 8.6 times as massive as Earth, and astronomers regard it as a sub-Neptune — a type of planet that doesn’t exist in our solar system.

Since its initial detection, astrobiologists have been interested in the world’s potential for habitability. They suspected it might be what’s called a Hycean planet — a type of world that’s massive enough to hold onto a hydrogen-rich atmosphere and a globe-spanning sea. The evidence has been piling up: In 2019, researchers reported the chemical signature of water vapor and clouds in K2-18 b’s atmosphere.

The fact that JWST detected an abundance of methane (CH4) and carbon dioxide (CO2), along with a shortage of ammonia (NH3), is consistent with the atmospheric modeling for Hycean planets.

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