Credit: Purdue University Since the first sighting of the first-discovered and largest asteroid in our solar system was made in 1801 by Giuseppe Piazzi, astronomers and planetary scientists have pondered the make-up of this asteroid/dwarf planet. Its heavily battered and dimpled surface is covered in impact craters. Scientists have long argued that visible craters on…
Author: astronomy.daily
Ancient buried log offers evidence of biomass vaults as cheap way to store climate-warming carbon
Process flow diagram (PFD) of wood burial project. Credit: Science (2024). DOI: 10.1126/science.adm8133 A team of researchers with varied backgrounds at the University of Maryland, working with a colleague from Ministère de l’Agriculture, des Pêcheries et de l’Alimentation, in Canada, reports the viability of burying biomass as an inexpensive way to store climate-warming carbon. In…
Earth 2.0 or its evil twin? Discovery of Earth-sized planet could shed light on conditions necessary for life
5σ contrast limits at J (bottom left), H (top left), and K (bottom right) from Gemini/NIRI and at 𝐾′ from Keck II/NIRC2 (top right). The combined images are shown in the insets of the panels, where Gliese 12 is at the star symbols. The maximum values of the image dynamic range were set to be 20 times…
Tree-ring data reveal how the jet stream has shaped extreme weather in Europe for centuries
Members of the research team collected tree ring samples at various locations in Europe, including the Balkan region. Credit: Valerie Trouet During her summer travels to her native Belgium, University of Arizona professor Valerie Trouet noticed something that turned casual curiosity into a major scientific discovery: when the sun hid behind an overcast sky and…
Hubble captures stellar nurseries in majestic spiral galaxy IC 1954
This NASA/ESA Hubble Space Telescope image features the spiral galaxy IC 1954. Credit: ESA/Hubble & NASA, D. Thilker, J. Lee and the PHANGS-HST Team This image from the NASA/ESA Hubble Space Telescope features the spiral galaxy IC 1954, located 45 million light-years from Earth in the constellation Horologium. It sports a glowing bar in its…
Volcanoes may help reveal interior heat on Jupiter moon
Nearly 400 active volcanoes punctuate the Jupiter moon Io. Using flyby data from NASA’s Juno mission that examines the volcanoes, doctoral student Madeline Pettine led a group of Cornell astronomers to study a fundamental process in planetary formation and evolution: tidal heating. Credit: NASA/JPL-Caltech/SwRI/MSSS By staring into the hellish landscape of Jupiter’s moon Io—the most…
Climate change will lead to wetter US winters, modeling study finds
Projected area-weighted subregional changes in seasonal precipitation (2070–2099 relative to 1985–2014). Credit: npj Climate and Atmospheric Science (2024). DOI: 10.1038/s41612-024-00761-8 Most Americans can expect wetter winters in the future due to global warming, according to a new study led by a University of Illinois Chicago scientist. Using climate models to investigate how winter precipitation in…
The unexpected role of magnetic microbes in deep-sea mining
The growth of polymetallic nodules provides a low-oxygen, organic-rich microenvironment suitable for magnetotactic bacteria. Credit: Yan Liu Polymetallic nodules are potato-sized formations on the ocean floor that are rich in minerals such as nickel, cobalt, and manganese. Their concentration of rare, economically important minerals has made the nodules the focus of controversial deep-sea mining enterprises….
How emissions from Brazilian Pantanal's soda lakes contribute to climate change
Soda lakes are less common than freshwater lakes in the Pantanal. Credit: Thierry Alexandre Pellegrinetti / CENA-USP Seasonal variations with alternating dry and rainy seasons and fluctuating levels of nutrients are factors that significantly influence greenhouse gas emissions from soda lakes in the Pantanal, considered less common than emissions from freshwater lakes. The Pantanal is…
New millisecond pulsar discovered
Ks-band image of Terzan 6. Credit: Gao et al., 2024. Using the Green Bank Telescope (GBT), astronomers have observed a globular cluster known as Terzan 6. They detected a new millisecond pulsar that is likely associated with this cluster. The finding was reported in a research paper published September 17 on the pre-print server arXiv….