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Category: space

Astronomers discover a super-Earth orbiting a nearby red dwarf

Astronomers from Italy and Brazil have investigated a nearby red dwarf star known as Ross 318 and have discovered an exoplanet orbiting this star, which is at least six times more massive than Earth. The discovery is reported in a research paper published May 11 on the arXiv preprint server.

Located just 28 light years away from Earth, Ross 318 (also known as Gliese 48, or TIC 379084450) is a red dwarf star of spectral type M3.5V. The star has an orbital period of approximately 51.5 days and an effective temperature of 3,450 K, and showcases strong magnetic activity, which poses a major challenge for exoplanet searches.

A team of astronomers led by Giuseppe Conzo from the amateur astronomy association Gruppo Astrofili Palidoro (GAP) decided to investigate Ross 318, hoping that amidst its magnetic activity, they could verify whether an alien world orbits this star. For this purpose, they conducted a systematic re-analysis of radial velocity (RV) data from the CARMENES spectrograph and decade-long High Resolution Echelle Spectrometer (HIRES) observations. Their study was complemented by data from the Transiting Exoplanet Survey Satellite (TESS).

Orbital Data Centers: Power and Thermal Management for Scalable Architectures

Redwire’s latest whitepaper examines the challenges and opportunities associated with scaling orbital data centers (ODCs), with a focus on power generation and thermal management. ODCs could eventually surpass terrestrial data centers by leveraging abundant solar energy in space and avoiding Earth-based infrastructure limitations.

The whitepaper examines the scaling of power and thermal systems for ODCs within a single-spacecraft architecture and highlights how the future success of ODCs will depend on treating power and thermal management as primary architectural drivers from the earliest stages of design.

Drawing on decades of Redwire’s spaceflight heritage in deployable structures, high-power solar arrays, and thermal management systems, the in-depth study also highlights how existing flight-proven technologies can support practical and scalable orbital compute architectures.

This tiny outer Solar System world has an atmosphere. It shouldn’t

Astronomers have spotted something surprising in the far outer Solar System—a faint, short-lived atmosphere clinging to a tiny icy world that shouldn’t be able to hold one at all. The object, called 2002XV93, is far smaller than Pluto, yet observations during a rare stellar alignment revealed its presence through a subtle dimming of starlight. Even more puzzling, calculations suggest this atmosphere should vanish within about 1,000 years unless it’s constantly being replenished.

A group of professional and amateur astronomers in Japan has uncovered evidence that a small, distant object in the outer Solar System is surrounded by a thin atmosphere. The finding is surprising because the object is far too small to hold onto gas for long, raising new questions about how and when this atmosphere formed. Future observations will be needed to better understand its composition and origin.

Far beyond Neptune’s orbit, thousands of icy bodies known as trans-Neptunian objects (TNOs) circle the Sun. Pluto is the most well-known example and is one of the few with a confirmed thin atmosphere. For most TNOs, however, the combination of extremely low temperatures and weak gravity makes it unlikely for them to retain any gases. As a result, scientists generally expect these distant objects to be airless.

Ultra-Faint Dwarf Galaxies Could Unlock Secrets of the Early Universe

Ultra-faint dwarf galaxies are among the smallest known galaxies orbiting the Milky Way. Astronomers have long viewed them as ancient remnants from the early cosmos. Now, researchers at the Oskar Klein Centre and the LYRA collaboration have used a powerful new set of simulations to show that these dim galaxies may reveal how conditions in the young Universe shaped which galaxies were able to grow and which never formed stars at all.

The study, published in Monthly Notices of the Royal Astronomical Society (MNRAS), was led by Azadeh Fattahi, Associate Professor at the Oskar Klein Centre (OKC), along with collaborators from Durham University and the University of Hawaii.

She explains the scale of the project: “In this work we presented a brand-new suite of cosmological simulations focused on the faintest galaxies in the Universe, with an unprecedented resolution. These are by far the largest sample of such galaxies ever simulated at these resolutions.”

Alien AI And The Von Neumann Data Collector

An exploration of human AI versus alien AI and the idea of a galaxy wide data collection network operating at light speed to transfer information on the biology within it.

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Hello Universe: NASA’s Next-Gen Space Processor Undergoes Testing

NASA’s High Performance Spaceflight Computing project aims to dramatically improve the computing power of spacecraft. Missions need processors that can withstand the harsh space environment, so they use chips developed years ago that are hardy and reliable. But upgraded chips are needed to enable the development of autonomous spacecraft, accelerate the rate of scientific discovery through faster data analysis, and support astronauts on missions to the Moon and Mars.

“Building on the legacy of previous space processors, this new multicore system is fault-tolerant, flexible, and extremely high-performing,” said Eugene Schwanbeck, program element manager in NASA’s Game Changing Development program at the agency’s Langley Research Center, in Hampton, Virginia. “NASA’s commitment to advancing spaceflight computing is a triumph of technical achievement and collaboration.”

The centerpiece of the High Performance Spaceflight Computing project is a new radiation-hardened, high-performance processor, designed to provide up to 100 times the computational capacity of current spaceflight computers while enduring a barrage of challenges in space. NASA’s Jet Propulsion Laboratory in Southern California has been conducting various tests that replicate those challenges.

Ancient Martian valley holds major clues to a past ocean

New images of Shalbatana Vallis from ESA’s Mars Express orbiter reveal well-preserved geological clues of past water and lava activity on ancient Mars. [ https://www.labroots.com/trending/space/30564/ancient-martia…st-ocean-2](https://www.labroots.com/trending/space/30564/ancient-martia…st-ocean-2)

How much water and lava flowed across the surface of Mars billions of years ago? This is what a recent image obtained from the European Space Agency’s Mars Express orbiter hopes to figure out as the more than two-decade-old orbiter captured incredible images that could help researchers piece together the environment on ancient Mars. This is because these images offer clues of past water and lava activity on Mars when the Red Planet was far warmer and wetter than it is today.

This latest image reveals a vast area comprised of a mixture of buried and visible impact craters, eroded hills and mesas, wrinkle ridges from lava cooling and contracting, chaotic terrain from the melting of ice, dark volcanic ash, and a massive channel called Shalbatana Vallis where researchers hypothesize was craved from massive amounts of groundwater that swelled up to the Martian surface. Because Mars lack plate tectonics like Earth, these landforms have been well-preserved for billions of years. Once Mars became incapable of having liquid water on its surface, the Martian wind and dust buried and eroded some of these features, though not to the extent as we see erosion on Earth.

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