Life Beyond Earth
Exploring where and how life might exist elsewhere
This journey emerged from 28 new research articles across Astronomy & Space and Interdisciplinary.
This topic surfaced automatically because research activity spiked across multiple disciplines this month.
Scientists are increasingly investigating whether life could survive—or even thrive—in the extreme environments found on other worlds in our solar system. Recent discoveries about microbial survival in harsh conditions, combined with new insights into the geology and history of planets like Mars and Earth's moon, are reshaping our understanding of where life might exist.
With missions targeting the Moon's south pole and the moons of Mars, understanding which organisms can survive in extreme extraterrestrial environments is critical for both preventing contamination and identifying promising locations to search for alien life. These investigations bridge multiple scientific disciplines and could answer one of humanity's most profound questions: are we alone?
The learning journey
Extremophiles
Understanding organisms that survive Earth's harshest environments
Planetary geology
Learning how planetary surfaces and interiors create habitable niches
Astrobiology
Integrating knowledge to search for life beyond Earth
Current research
See the latest discoveries driving this topic below.
Foundational explainers
What Is Astrobiology and the Search for Extraterrestrial Life? Exploring the Universe
What Is Astrobiology and the Search for Extraterrestrial Life? Exploring the Universe Are we alone in the univer…
Read →What Is Planetary Geology and Surface Features? Exploring the Universe
What Is Planetary Geology and Surface Features? Exploring the Universe Beneath the rust-colored haze of Mars lie…
Read →Research timeline in this topic
Open questions
Science still doesn't fully know:
- How long can Earth microbes remain viable in the lunar regolith's radiation environment?
- Whether subsurface liquid water reservoirs currently exist beneath the Martian surface?
- What biosignatures would definitively distinguish alien life from contamination by Earth organisms?
Continue exploring