Although many cases of stellar spin–orbit misalignment are known, it is usually unclear whether a single planet’s orbit was tilted or if the entire protoplanetary disk was misaligned. Measuring stellar obliquities in multitransiting planetary…
Author: admin
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TOI-880 is an Aligned, Coplanar, Multiplanet System
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The Ejecta Nebula Around the Wolf–Rayet Star WR 71
We present deep Hα and [O iii] images of the ejecta-rich nebulosity associated with the suspected runaway and binary Wolf–Rayet (WR) star WR 71 (HD 143414). In Hα emission, the nebula appears as a crescent shaped, broken ring of clumpy…
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Metallicities of M Dwarf Planet Host Stars from Kepler, K2, and TESS Observed by APOGEE: Trends with Exoplanetary Radii and Orbital Periods
One important property in studying the exoplanet population is the host star metallicity ([M/H]). In this study, we derived stellar metallicities and oxygen abundances for 48 M dwarf stars using the near-infrared high-resolution spectra from the…
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An Ultraviolet Study of CO Chemistry in the Magellanic Clouds
How does molecular cloud chemistry change with metallicity? In this work, we study the relation between molecular hydrogen (H2) and carbon monoxide (CO) at 1/2 and 1/5 solar metallicity using ultraviolet absorption spectroscopy obtained as part…
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Dwarf Planet Ceres May Have Had Lasting Source of Chemical Energy to Fuel Habitability
Although there is no evidence that microorganisms ever existed on Ceres, the results of a new study support theories that this dwarf planet may have once had conditions suitable to support single-celled lifeforms.
This illustration depicts the…
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NASA’s Psyche Images Earth and Moon
Scientists on the imaging team, led by Arizona State University, captured multiple long-exposure (up to 10-second) pictures of the two bodies, which appear as dots sparkling with reflected sunlight amid a starfield in the constellation Aries. The…
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Why Great White Sharks’ DNA Doesn’t Add Up
Great white sharks hold a baffling genetic puzzle: uniform nuclear DNA but divided mitochondrial DNA that defies migration and evolution theories. White sharks show a striking mismatch between the DNA inside their cell nuclei and the DNA within…
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NYC Gateway Project TBMs Near Completion, on Track for 2026 Tunneling Start
Manufacture of the tunnel boring machines that will excavate the first mile of the Gateway Project’s Hudson River tunnel in New Jersey is nearing completion, marking a major step toward launching in 2026, the Gateway Development Commission said…
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Omega Fatty Acids Could Protect against Alzheimer’s Disease in Women
New research demonstrates that associations between various lipids and Alzheimer’s disease — a devastating neurological disease that disproportionately affects women — are more prominent in women and often absent in men.
Wretlind et al….
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Pardon My Rant
Keith’s note: I posted a picture the other day. It was sent to me by 3 people with no known/cited source. So I cropped it and put NASAWatch.com on it so there’d be some traceability and show that it was not A.I. generated. I thought it was rather…
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