Essays about: "habitable zone"

Showing result 1 - 5 of 12 essays containing the words habitable zone.

1. 1. Starshades: Geoengineering Solutions and Technosignatures in Direct Imaging Phase Curves

   University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

   Author : Claudia Skoglund; [2023]
   Keywords : Starshades; extraterrestrial intelligence; stellar evolution; technosignatures; phase curves; direct imaging; habitable zone.; Physics and Astronomy;

   Abstract : The stellar luminosity increases as a star evolves which inevitably yields a higher temperature on planets in orbit around the star. It is reasonable to assume that intelligent civilizations would tackle this issue through installing artificial structures that can alter the radiation received by the planet. READ MORE

3. 2. Climate Simulations of an Exoplanet with a Slab Ocean: A 3D Model Intercomparison of various GCMs

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Moa Biserud; [2022]
   Keywords : Climate simulations; GCM; ROCKE-3D; Exoplanet; Slab Ocean; Qflux=0;

   Abstract : Three-dimensional (3D) planetary general circulation models (GCMs) have been derived from global climate models used to project 21st century changes in Earth's climate. GCMs are used to address questions regarding the climate-and habitability aspects of terrestrial planets within the solar system and assess the habitability of planets outside of the solar system, so called exoplanets. READ MORE

4. 3. Assessing the relationship between hypoxia and life on Earth, and implications for the search for habitable exoplanets

   University essay from Lunds universitet/Geologiska institutionen

   Author : Thomas Evan Smith; [2022]
   Keywords : hypoxia; hypoxia-inducible factors; atmospheric oxygen; multicellularity; embryogenesis; exoplanets; white dwarfs; oxygen fugacity; Earth and Environmental Sciences;

   Abstract : Atmospheric oxygen at the level of present-day Earth (21%) is generally regarded as permissive for the development and survival of complex multicellular life, such as animals. The hypothesis that oxic conditions are conducive for multicellular life has subsequently been applied to the search for life elsewhere in the universe, with planets exhibiting atmospheric oxygen of a similar level to Earth being considered as candidates for habitability. READ MORE

5. 4. Post-Main Sequence Habitability for Outer Solar System Moons

   University essay from Uppsala universitet/Institutionen för fysik och astronomi

   Author : Viktor Sparrman; [2022]
   Keywords : Habitability; Habitable Zone; Greenhouse Effect; Outer moons; Red Giant Branch; Horizontal Branch; Asymptotic Giant Branch; solar evolution;

   Abstract : The search for extra-terrestrial life is guided by the classification of promising candidate worlds. In this classification the habitable zone acts as a measure for the perceived habitability of a circumstellar body. Habitable zone definitions vary between using a conservative and an optimistic limit. READ MORE

6. 5. Have Radial Velocity Surveys Missed Any Planets?

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

   Author : Shah Raj; [2021]
   Keywords : radial velocity survey; transit method; exoplanet; habitable zone; habitable zone boundaries; HZ; early Mars; recent Venus; stability; instability; chaos; REBOUND; MEGNO; MEGNO maps; Hill sphere; stable systems; unstable systems; Physics and Astronomy;

   Abstract : The project was aimed at numerically assessing exoplanetary systems to distinguish their capabilities of hosting additional planets. The shortcomings of the radial velocity method sometimes causes hindrance in the detection of terrestrial planets. READ MORE