It's a good course if you have some prior knowledge. For absolute beginners, some concepts might be a bit challenging. The structure is logical, though.
Designing Alien Worlds: An Introduction to Astrobiology
Apply principles of planetary science and biology to speculate on extraterrestrial life and design your own plausible star systems.
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About this course
Course contents
6 modules · 30 lessons · 3h
1
The Biological Blueprint
Define life and identify its core physical and chemical requirements.
- The Search for Life
Astrobiology is the multidisciplinary study of life's origin and distribution in the universe.6 min - Defining Life
Life is a self-sustaining chemical system capable of Darwinian evolution.6 min - The Big Three: Water, Carbon, Energy
Life as we know it requires a solvent, a structural element, and an energy source.6 min - Why Water?
Water's unique chemical properties make it the ideal medium for biological reactions.6 min - Alternative Chemistries
Exploring if life could exist using silicon or liquid methane instead of carbon and water.6 min
2
Life in Our Backyard
Evaluate the potential for life within our own solar system.
- Mars: The Red Mirage
Mars had liquid water in the past and remains a primary target for fossil life.6 min - Europa: The Hidden Ocean
Jupiter's moon Europa likely hides a massive saltwater ocean beneath its icy crust.6 min - Enceladus: The Geyser Moon
Saturn's moon Enceladus ejects organic-rich water into space from its south pole.6 min - Titan: The Exotic World
Titan has a thick atmosphere and liquid methane lakes, presenting a different kind of habitability.6 min - Venus: Life in the Clouds?
Despite a hellish surface, the temperate upper atmosphere of Venus is a potential biological niche.6 min
3
The Planet Hunters
Understand how we find and characterize planets orbiting other stars.
- The Exoplanet Revolution
Thousands of planets exist beyond our solar system, varying wildly in size and orbit.6 min - The Transit Method
Detecting planets by measuring the slight dip in a star's brightness as a planet passes in front.6 min - Radial Velocity: The Wobble
Using the Doppler effect to find planets by observing the gravitational tug they exert on their star.6 min - Direct Imaging
Blocking out a star's light to see the faint glow of a planet directly.6 min - Gravitational Microlensing
Using the gravity of a star to act as a magnifying glass to find distant planets.6 min
4
Habitability and Resilience
Connect the concept of habitable zones with the lessons learned from Earth's toughest organisms.
- The Goldilocks Zone
The habitable zone is the region around a star where liquid water can exist on a planet's surface.6 min - Star Types and Habitability
Different stars (M-dwarfs vs. G-type) have different habitable zone distances and stability.6 min - Extremophiles: Heat and Acid
Organisms on Earth thrive in volcanic vents and acidic pools, expanding our definition of 'habitable'.6 min - Life Under Pressure
Deep-sea extremophiles show that life can survive without sunlight and under immense pressure.6 min - The Resilience of Life
Tardigrades and spores demonstrate that life can survive the vacuum and radiation of space.6 min
5
Reading Alien Atmospheres
Learn how to detect signs of life through light and data analysis.
- Spectroscopy Basics
Light passing through an atmosphere carries a chemical fingerprint of its gases.6 min - The Atmospheric Shield
Atmospheres regulate temperature and protect life from harmful stellar radiation.6 min - Searching for Biosignatures
Oxygen, methane, and carbon dioxide in specific ratios can indicate biological activity.6 min - Technosignatures
Searching for signs of advanced civilizations through radio waves or mega-structures.6 min - Analyzing Real Data
A walkthrough of interpreting a real light curve and transmission spectrum from the James Webb Telescope.6 min
6
Designing Your World
Synthesize all concepts to create a scientifically plausible alien world.
- Choosing Your Star
Selecting a star type determines the energy available and the location of the habitable zone.6 min - Planetary Architecture
Determining the size, gravity, and orbital distance of your imaginary planet.6 min - Building an Atmosphere
Calculating the greenhouse effect and gas composition to ensure surface liquid water.6 min - Designing Alien Life
Adapting biological forms to the specific gravity and environment of your world.6 min - The Final System Review
Checking your world against scientific principles for consistency and plausibility.6 min
The 'Exo-Design' Project
You will design a complete, scientifically-grounded star system including one habitable planet or moon. You must justify your design using the concepts of habitable zones, atmospheric composition, and biological requirements.
What you'll get
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Certificate of completion
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Phone or computer
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Short & focused
3h of practical content
Certificate of completion
Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.
Reviews (3)
Pretty good foundation. The explanations were generally clear, and the structure made sense. I'd say it's a worthwhile course.
This course exceeded my expectations. The real-world applications discussed are incredibly useful. Great job!
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Earth's Dynamic History: Foundations of Geological Science
Frequently asked
What do I need to take this course? +
Just a phone or computer with internet. No installs, no special hardware.
How do I pay? +
By card via Stripe. We don’t store card details — Stripe handles them securely.
Can I get a refund? +
Yes — full refund within 14 days, no questions asked.
How long will I have access? +
Forever. Once you purchase, the course is yours to revisit anytime.
Will I get a certificate? +
Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.
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