![LT solution with 2036 launch. Continuous thick curve: trajectory, Short segments: thrust law, Dashed lines: planet and comet orbits. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/Double-Gravity.png?resize=1200%2C718&ssl=1)
[astro-ph.EP] The perihelion of comet 1P/Halley in 2061 is an excellent chance to revisit this object of outstanding scientific and cultural relevance. During its 1986 approach to the Sun, it […]
1P/Halley
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Status Report
Optical And Near-Infrared Spectroscopy Of The Outbursting Comet 12P/Pons-Brooks
We present optical and near-infrared (NIR) observations of the outbursting, Halley-type comet 12P/Pons-Brooks.
Posted inAstrochemistry, Comets and Asteroids, Status Report
Low NH3/H2O Ratio In Comet C/2020 F3 (NEOWISE) At 0.7 au From The Sun
A lower-than-solar elemental nitrogen content has been demonstrated for several comets, including 1P/Halley and 67P/C-G with independent in situ measurements of volatile and refractory budgets.