1 / 16

Lecture 19: How to Find Life on Exoplanets

Lecture 19: How to Find Life on Exoplanets. Life as we know it Spectroscopy of Earth as a “pale Blue Dot” Future space missions. April 14 news story (Natl.Geo). Finding „Pale Blue Dots“. 1) Our place in the universe Telescopes & finding planets 2) Search for Life No place like home... ?.

alexis
Télécharger la présentation

Lecture 19: How to Find Life on Exoplanets

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lecture 19: How to Find Life on Exoplanets Life as we know it Spectroscopy of Earth as a “pale Blue Dot” Future space missions

  2. April 14 news story (Natl.Geo)

  3. Finding „Pale Blue Dots“ 1) Our place in the universeTelescopes & finding planets2) Search for LifeNo place like home... ?

  4. Search for life...- as we know it

  5. Signs Of Life On An Earth-like Planet Needed for life Primordial; & bacteria product Plant product Bacteria Plant life observed Carbon dioxide Nitrous oxide Vegetation Ozone Water Methane Oxygen

  6. Features: 1) observables & 2) unique

  7. Spectral features (example IR)

  8. Take-out on another planet?

  9. Planets NOW &EARTH... Part of the Puzzle

  10. HUGE HOT GAS BALL Atmosphere by transits... Sept 2008

  11. EARTH – the next step Earth ?

  12. CoRoT, KEPLER, JWST, TPF...

  13. OurGeneration Explorers… find our path in unscarred territoriesSpitzer, Kepler, Darwin (ESA), Terrestrial Planet Finder (NASA)… Will answer a 1000s year old question… are there other pale blue dots out there? Alone ? Bacterial worlds ? Humans never evolve ? Exciting times ahead

  14. Main points to take home: • Search for life on other planets: rely on Earth life biosignatures. • Biosignatures: find observable and unique features. • Technical difficulties and space missions in the near future.

More Related