News
In The Heart Of Planetary Nebula Tc 1, A Buckyball Of Buckyballs
1+ day, 5+ hour ago (416+ words) Fullerene C60, the molecule that looks like a soccer ball, had already been identified in the planetary nebula Tc 1 by the Spitzer Space Telescope in 2010. Now a team led by the same scientist as then " Jan Cami of Western University " has…...
The Science From Asteroid Sample Return Missions
3+ day, 8+ hour ago (140+ words) astrobiology. com The Science From Asteroid Sample Return Missions To date, three samples from near-Earth asteroids have been delivered to Earth by Japan's Hayabusa (2010) and Hayabusa2 (2020) missions, and the United States OSIRIS-REx mission (2023). Free from terrestrial contamination, these pristine materials provide…...
Discovery Of Unexpectedly Large Organic Molecules from Asteroid Ryugu
2+ week, 2+ day ago (434+ words) Background of the Research The diverse organic molecules present in outer space hold information about the chemical evolution (Note 4 ) that occurred when the solar system was formed, and it is thought that their arrival on early Earth contributed to the…...
Planetary Architectures of Kepler Compact Multis with Binary Star Companions
3+ week, 4+ day ago (171+ words) In particular, planets with binary-star hosts have a lower overall occurrence rate compared to their single-star counterparts, as well as a suppressed relative occurrence rate for sub-Neptunes (Rp=24 R) compared to super-Earths (Rp=1. 01. 5 R). These differences are most pronounced in close separation…...
Tianwen-2 Target Asteroid (469219) Kamo'oalewa Probably Develops An Itokawa-compositional But Ultra-highly Space-weathered Surface
1+ mon, 9+ hour ago (198+ words) astrobiology. com Tianwen-2 Target Asteroid (469219) Kamo'oalewa Probably Develops An Itokawa-compositional But Ultra-highly Space-weathered Surface China's Tianwen-2 mission plans to return samples from a small, rapidly spinning Earth quasi-satellite (469219) Kamo'oalewa. Previous studies linked Kamo'oalewa to lunar composition and origin. Here, we…...
TOI-4552 b: A New Ultra-short Period Rocky World Revealed By NIRPS And TESS
1+ mon, 1+ week ago (378+ words) astrobiology. com TOI-4552 b: A New Ultra-short Period Rocky World Revealed By NIRPS And TESS A particularly intriguing subclass of rocky exoplanets are the ultra-short period (USP) worlds that orbit their host stars in less than a day. These planets are…...
Novelty Detection In Rover-based Planetary Surface Images Using Autoencoders
1+ mon, 3+ week ago (184+ words) In the domain of planetary science, novelty detection is gaining attention because of the operational opportunities it offers, including annotated data products and downlink prioritization. Using a variational autoencoder (VAE), this work improves upon state-of-the-art novelty detection performance in the…...
TESS Planet Occurrence Rates Reveal the Disappearance of the Radius Valley Around Mid-to-Late M Dwarfs
1+ mon, 4+ week ago (223+ words) We present the deepest systematic search for planets around mid-to-late M dwarfs to date. We have surveyed 8134 mid-to-late M dwarfs observed by TESS with a custom built pipeline and recover 77 vetted transiting planet candidates. We characterize the sensitivity of our…...
Detection Of CO2 Ice In The Planetary Nebula NGC 6302
2+ mon, 1+ day ago (659+ words) astrobiology. com Detection Of CO2 Ice In The Planetary Nebula NGC 6302 Using JWST/MIRI observations, we report the detection of CO2 ice in the dusty torus of the planetary nebula NGC 6302, an environment generally considered hostile to fragile molecular species and ices…...
Efficient Reduction Of Stellar Contamination And Noise In Planetary Transmission Spectra Using Neural Networks
2+ mon, 2+ day ago (247+ words) astrobiology. com Efficient Reduction Of Stellar Contamination And Noise In Planetary Transmission Spectra Using Neural Networks Context: JWST has enabled transmission spectroscopy at unprecedented precision, but stellar heterogeneities (spots and faculae) remain a dominant contamination source that can bias atmospheric…...