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Johansen, A. et al. Rapid planetesimal formation in…
Category: 2. Space
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100 years of supernovae | Nature Reviews Physics
This year marks 100 years since Knut Lundmark published his analysis of the nature and distribution of novae, or stellar explosions. He noticed an especially bright sub-population of novae — the ‘upper class’ novae — and suggested they…
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First Chinese mission to sample an asteroid starts its journey
The quasi-satellite Kamo‘oalewa (centre, artist’s impression) dances around Earth but isn’t tied to the planet by its gravity.Credit: Addy Graham/University of Arizona
China has sent a probe on an ambitious mission to grab rocks from a…
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Multiple Outbursts of Halley-type Comet 12P/Pons–Brooks
We present optical observations of the Halley-type comet 12P/Pons–Brooks (12P) on its approach to perihelion. The comet was active even in the first observations at ∼8 au. Starting at ∼4 au, 12P exhibited an extraordinary series of…
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TESS Light Curve of the Interacting Binary W Serpentis
The unusal light curve of the massive eclipsing binary W Ser was recently observed with high S/N and fast cadence by the NASA TESS mission. The TESS light curve records two eclipses and relatively fast variations outside of the eclipses. The…
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An Extremely Hot Pulsating Prewhite Dwarf from OGLE
We show that the blue 18.3 minutes variable object discovered in the Galactic disk by the OGLE-III survey and named OGLE-GD-WD-0001 is a pulsating prewhite dwarf of PG 1159 spectral type. With an effective temperature of about 160,000 K it is…
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Webb Focuses on Behemoth Galaxy Cluster: Abell S1063
Astronomers using the NASA/ESA/CSA James Webb Space Telescope have captured a remarkable new image of the galaxy cluster Abell S1063.
This Webb image shows the massive galaxy cluster Abell S1063. Image credit: NASA / ESA / CSA / Webb / H. Atek…
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Rocket Lab to acquire satellite payload manufacturer Geost for $275 million
WASHINGTON — Rocket Lab, a publicly traded aerospace manufacturer and launch services provider, is expanding deeper into the defense sector with the acquisition of Geost, a supplier of electro-optical and infrared (EO/IR) sensor payloads…
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NASA’s New Chief of Staff
Keith’s note: Looks like @NASA has a new Chief of Staff: Brian Hughes from Jacksonville, FL. LinkedIn profile – @BrianHughes47 and @BrianHughes
The post NASA’s New Chief of Staff appeared first on NASA Watch.
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Astronomers Discover Dwarf Planet Candidate on 25,000-Year Orbit
Named 2017 OF201, the newly-discovered trans-Neptunian object is one of the most distant visible objects in our Solar System and is likely large (about 700 km in diameter) enough to qualify as a dwarf planet.
Cutout images of all 19 detections…
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