
Here are some recent space-related stories.
—BBC Sky at Night: “We Were Truly Astonished” – Astronomers Say Earth Formed from the Same Material as Mars“
Planetary scientists say they’ve taken a step closer to solving the mystery of where the material that formed Earth comes from. While Earth resides in the inner Solar System with Mercury, Venus and Mars, it’s been proposed that up to 40% of the material that formed our planet came from the outer reaches, beyond the orbit of Jupiter. But a new study looking at the chemistry of meteorites has found that Earth is likely made entirely from the inner Solar System. In particular, Earth’s make-up is strikingly similar to that of Mars and Vesta, one of the biggest objects in the asteroid belt.
—SciTechDaily: “Interstellar Comet 3I/ATLAS Came From a Place Nothing Like Our Solar System“
A comet from beyond our solar system is giving astronomers a rare look at how alien planetary systems may form under conditions very different from those that shaped our own cosmic neighborhood. The object, called 3I/ATLAS, was discovered less than a year ago as it traveled through our solar system. Although scientists still do not know exactly where it originated, new research led by the University of Michigan suggests the comet formed in an extremely cold region of space…“Our new observations show that the conditions that led to the formation of our solar system are much different from how planetary systems evolved in different parts of our galaxy,” said Luis Salazar Manzano, lead author of the study and a doctoral student in the U-M Department of Astronomy.
—New York Times: “U.S.-China Rivalry Reaches South American Skies“
In the foothills of the Argentine Andes, the enormous Chinese radio telescope sits in one of the world’s premier stargazing locations, surrounded by vast, undulating mountain ranges and beneath skies untouched by light pollution. It is also on the opposite side of the planet from Beijing, offering China a window on the half of the heavens it would not otherwise see. But the Chinese telescope at the site, the Cesco observatory in San Juan Province, picks up no signals. After the U.S. government repeatedly pressed them on the issue, the Argentine authorities stopped the project’s completion. Lacking key parts, the telescope now sits dismembered, its gigantic antenna pointing blindly at the sky.




