Karka

Course

Are We Alone? Astrobiology & the Search for Life

Habitable zones, biosignatures and the Drake equation — computed, not just contemplated.

Professional electiveBeginnerSpaceCertificate
4 modules 21 lessons 15 enrolled ~8h of material

First three lessons free. Full access with Karka Pass from ₹49 for 7 days (7 days ₹49 · 30 days ₹199 · 1 year ₹1,999).

Are We Alone? Astrobiology & the Search for Life

By the end

What you'll build

  • Explain the ingredients every known biosphere requires and why liquid water is the headline requirement
  • Compute a star's habitable-zone inner and outer edges from its luminosity, in Python
  • Read a transit light curve and derive a planet's size from the dip in starlight
  • Compare the biosignature case for Mars, Europa and Enceladus and say what each mission is actually looking for
  • Reason quantitatively about the Drake equation and understand what SETI can and cannot tell us

Curriculum

What's inside

4 modules · 21 lessons

  1. 01

    What Life Needs

    5 lessons
    • Start Here: The Map and the Honest Truth
    • The Ingredients of Life
    • Extremophiles: Life at the Edges
    • Module 1 Check: What Life Needsquiz
    • Flashcards: Foundations of Astrobiologyflashcard sr
  2. 02

    Habitable Zones & Exoplanet Detection

    6 lessons
    • The Habitable Zone: The Goldilocks Band
    • Lab: Compute a Star's Habitable Zonepython lab
    • How We Find Exoplanets
    • Lab: Read a Transit Light Curvepython lab
    • Numericals: Habitable Zones and Transitsfill blank
    • + 1 more lesson
  3. 03

    Biosignatures & Where to Look

    5 lessons
    • What Counts as a Biosignature
    • Mars: The Dry Riverbeds
    • Ocean Worlds: Europa and Enceladus
    • Module 3 Check: Biosignatures and Ocean Worldsquiz
    • Flashcards: Biosignatures and Worldsflashcard sr
  4. 04

    The Drake Equation & SETI

    5 lessons
    • The Drake Equation
    • Numericals: Estimating with the Drake Equationfill blank
    • SETI: Listening to the Sky
    • Module 4 Check: Drake Equation and SETIquiz
    • Writing Lab: Make the Case for a Target Worldwriting lab

The shape of it

How this course works

Short lessons

21 lessons across 4 modules, each small enough to finish in one sitting.

Practice as you go

Every lesson ends with a small space for what you noticed — the doing is the learning.

A certificate at the end

Finish the course and earn a certificate anyone can verify with a link.

Ready when you are.

Make an account and this course opens up — your progress is saved from the very first lesson.