Rosetta – Page 2 – My WordPress Site

Astrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Tricorders & Sensors

A Cometary Landcape Covered With Organic Chemicals

by Keith CowingApril 23, 2024June 8, 2024

Astrochemistry, Astrogeology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography

Detection And Characterisation Of Icy Cavities On The Nucleus Of Comet 67P/Churyumov-Gerasimenko

by Keith CowingJanuary 5, 2024January 5, 2024

Mars Sample Tube Awaiting A Ride To Earth -- NASA

Astrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Comets and Asteroids, Imaging & Spectroscopy

Volatiles In The H2O and CO2 Ices Of Comet 67P/Churyumov-Gerasimenko

by Keith CowingOctober 9, 2023October 9, 2023

Schematic diagram of our preferred scenario. Red circles are planetesimals (and their fragments) from the terrestrial planet region. The black solid curves roughly denote the boundary of the current asteroid inner main belt. Eccentricity increases from bottom to top. Each panel shows the proposed evolution of the inner Solar System at different time ranges: (A) Formation and cooling of the EL planetesimal in the terrestrial planet region before 60 Myr after Solar System formation. In this period, the terrestrial planets began scattering planetesimals to orbits with high eccentricity and semimajor axes that correspond to the asteroid main belt. (B) Between 60 and 100 Myr, the EL planetesimal was destroyed by an impact in the terrestrial planet region. At least one fragment (the Athor family progenitor) was scattered by the terrestrial planets into the scattered disk, as in (A), then the giant planet instability implanted it into the inner main belt by decreasing its eccentricity. (C) A few tens of millions of years after the giant planet instability occurred, a giant impact between the planetary embryo Theia and proto-Earth formed the Moon. (D) The Athor family progenitor experienced another impact event that formed the Athor family at ~1500 Myr. -- Science

Astrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Imaging & Spectroscopy, Meteorites & Asteroids, Missions & Hardware

Complex Organosulfur Molecules On Comet 67P: Evidence From The ROSINA Measurements And Insights From Laboratory Simulations

by Keith CowingJuly 1, 2023July 1, 2023

Astrochemistry, Comets and Asteroids, Missions & Hardware

Comet Nuclei Composition And Evolution

by Keith CowingOctober 7, 2022December 2, 2023

Astrochemistry, Comets and Asteroids

Modelling The Water And Carbon Dioxide Production Rates Of Comet 67P/Churyumov-Gerasimenko

by Keith CowingSeptember 13, 2022December 2, 2023

Astrochemistry, Comets and Asteroids

Looking for Cometary Organics

by Keith CowingNovember 18, 2014

Astrochemistry, Astrogeology, Biosignatures & Paleobiology, Comets and Asteroids

What Chemistry Is Rosetta’s Comet Lander Looking For?

by Keith CowingNovember 12, 2014March 25, 2023

Comets and Asteroids

Philae Lander Could Provide Insights into Origins of Earth's Water

by Keith CowingNovember 11, 2014