Kyoto, Japan -- The size of our universe and the bodies within it is incomprehensible for us lowly humans. The sun has a mass that is more than 330,000 that of our Earth, and yet there are stars in the universe that completely dwarf our sun.

Stars with masses more than eight times that of the sun are considered high mass stars. These form rapidly in a process that gives off stellar wind and radiation, which could not result in stars of such high mass without somehow overcoming this loss of mass, or feedback. Something is feeding these stars, but how exactly they can accumulate so much mass so quickly has remained a mystery.

Observations of enormous disk-like structures that form around a star -- accretion disks -- had been proposed as the chief way of rapidly feeding young stars. However, a team of researchers from several institutions including Kyoto University and the University of Tokyo, has discovered another possibility.

A newly published paper, led by IPAC scientist Joe Masiero, provides evidence that two kinds of asteroids likely formed in the same regions during the beginning of our solar system. “Asteroids offer us the chance to look at what was going on in the early solar system like a freeze frame of the conditions that existed when the first solid objects formed,” said Masiero.

Astronomers from Chalmers University of Technology, Sweden, have discovered a vast and expanding bubble of gas and dust surrounding a red supergiant star – the largest structure of its kind ever seen in the Milky Way. The bubble, which contains as much mass as the Sun, was blown out in a mysterious stellar eruption around 4000 years ago. Why the star survived such a powerful event is a puzzle, the scientists say.

The new results are published in the scientific journal Astronomy and Astrophysics, and the team was led by Mark Siebert, Chalmers, Sweden. Using the ALMA radio telescope in Chile, the researchers observed the star DFK 52 – a red supergiant similar to the well-known star Betelgeuse.

Using XRISM, JAXA’s new high-precision X-ray spectroscopic satellite, researchers observed a stellar-mass black hole in the Milky Way and detected highly ionized iron absorption lines — clear signatures of hot gas. Remarkably, this detection was achieved at the dimmest X-ray state ever reported for such a system. The results reveal the complex structure and motion of gas around the black hole, offering new insights into the dynamic behavior of black holes.

SAN ANTONIO — August 19, 2025 — Southwest Research Institute led a James Webb Space Telescope (JWST) survey, discovering a previously unknown tiny moon orbiting Uranus. A team led by SwRI’s Dr. Maryame El Moutamid discovered the small object in a series of images taken on Feb. 2, 2025, bringing Uranus’ total moon count to 29.

Precise prediction of rocket plume radiative heat flux is critical for reusable launch vehicle design. LandSpace researchers have developed a breakthrough computational method integrating the discrete transfer method (DTM) with wide-band k-distribution modeling. Validated against high-resolution benchmarks with ≤6.0% error, this approach achieves engineering-viable efficiency while quantifying base/sidewall radiative heating throughout flight profiles for nine-engine LOX/CH4 rockets – providing key insights for thermal protection system optimization.