Category: 2. Space
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Author Correction: Geophysical evidence for an enriched molten silicate layer above Mars’s core
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.…
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Atmospheric Metallicity and C/O of HD 189733 b from High-resolution Spectroscopy
We present high-resolution K-band emission spectra of the quintessential hot Jupiter HD 189733 b from the Keck Planet Imager and Characterizer. Using a Bayesian retrieval framework, we fit the dayside pressure–temperature profile, orbital kinematics, mass-mixing ratios of H2O, CO, CH4, NH3, HCN, and H2S, and the 13CO/12CO ratio. We measure mass fractions of {\mathrm{logH}}_{2}{\rm{O}}=-{2.0}_{-0.4}^{+0.4} and…
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Insight into the Formation of β Pic b through the Composition of Its Parent Protoplanetary Disk as Revealed by the β Pic Moving Group Member HD 181327
It has been suggested that β Pic b has a supersolar metallicity and subsolar C/O ratio. Assuming solar carbon and oxygen abundances for the star β Pic and therefore the planet’s parent protoplanetary disk, β Pic b’s C/O ratio suggests that it formed via core accretion between its parent protoplanetary disk’s H2O and CO2 ice…
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XpoSat Launch Makes India The Second Country With a Black Hole Space Observatory : ScienceAlert
India launched its first satellite to study black holes on Monday as part of an ambitious space exploration project. The X-ray Polarimeter Satellite will make India the second country to investigate black holes and other celestial objects using an astronomical space observatory. NASA launched a similar mission in 2021 and has since made unprecedented discoveries.…
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NASA Unveils Stunning 14-Year Time-Lapse of the Gamma-Ray Sky
NASA’s Fermi Gamma-ray Space Telescope has created a stunning all-sky time-lapse movie from 14 years of data, capturing the dynamic universe. It highlights the Sun’s path, the gamma-ray glow of the Milky Way, and distant galaxies known as blazars. The movie reveals both the beauty and complexity of the cosmos, showcasing high-energy events from across…
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Strange Radio Signal Detected From Outside the Milky Way
Astronomers have discovered unique patterns in a repeating Fast Radio Burst (FRB 20220912A), observed by the SETI Institute. This finding, described in the Monthly Notices of the Royal Astronomical Society, challenges existing models of FRBs, which are intense, short-lived radio signals from space. Credit: SciTechDaily.com New research reveals a never-before-seen behavior in a repeating Fast…
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Eddie Bernice Johnson – NASA Watch
Eddie Bernice Johnson … Continue Reading News Source: nasawatch.com
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Hubble Sees Myriads of Distant Galaxies in Cetus
A new infrared image, taken with the Wide Field Camera 3 (WFC3) on board the NASA/ESA Hubble Space Telescope, shows dozens of galaxies — including SDSS J020941.27+001558.4, SDSS J020941.23+001600.7, and HerS J020941.1+001557 — in the constellation of Cetus. This Hubble image shows various distant galaxies in the constellation of Cetus: most of the galaxies are…
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India launches X-ray astronomy satellite
WASHINGTON — India launched an astronomy satellite to start a year that will feature key tests for its human spaceflight program and a potential joint crewed mission with NASA. A Polar Satellite Launch Vehicle (PSLV) lifted off at 10:40 p.m. Eastern Dec. 31 (9:10 a.m. local Jan. 1) from the Satish Dhawan Space Centre. It…
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January’s Night Sky Notes: Connecting the ‘Dots’ with Asterisms
An asterism is a pattern of stars in the night sky, forming shapes that make picking out constellations easy. Cultures throughout history have created these patterns as part of storytelling, honoring ancestors, and timekeeping. Orion’s hourglass is just one of many examples of this, but did you know Orion’s brightest knee is part of another…