Hank talks about astrobiology - the study of and search for life in the universe off Earth. Right now, the field has more questions than answers, but all they all seek to answer that one fundamental query: are we alone in the universe?

Every star we see in the sky has at least one planet orbiting it, says astronomer Sara Seager. So what do we know about these exoplanets, and how can we find out more? Seager introduces her favorite set of exoplanets and shows new...

We're heading for a world population of 10 billion people -- but what will we all eat? Lisa Dyson rediscovered an idea developed by NASA in the 1960s for deep-space travel, and it could be a key to reinventing how we grow food.

Life on Earth depends on the steady nature of our star, and an international team of scientists searched thousands of other stars to try to find out if the sun has always been as consistent as it is now. And According to a study...

Life makes our planet an incredibly exotic place compared to the rest of the known universe, says astrobiologist Betül Kaçar, whose research uses statistics and mathematical models to simulate ancient environments and gather insights...

Exactly when and where did life on Earth begin? Scientists have long thought that it emerged three billion years ago in the ocean -- until astrobiologist Tara Djokic and her team made an unexpected discovery in the western Australian...

Is there life beyond earth? Join NASA's director of planetary science James Green for a survey of the places in our solar system that are most likely to harbor alien life.

Physicist Freeman Dyson suggests that we start looking for life on the moons of Jupiter and out past Neptune, in the Kuiper belt and the Oort cloud. He talks about what such life would be like -- and how we might find it.

In October 2017, astrobiologist Karen J. Meech got the call every astronomer waits for: NASA had spotted the very first visitor from another star system. The interstellar comet -- a half-mile-long object eventually named `Oumuamua, from...

Gardening doesn't need to be a hobby just here on Earth. In fact, it might help life outside of Earth quite a bit to take that pastime to the stars.

Humans have been studying the stars for thousands of years, but astrophysicist Juna Kollmeier is on a special mission: creating the most detailed 3-D maps of the universe ever made. Journey across the cosmos as she shares her team's work...

Hank tells us about NASAs discovery of the 1st planet ever discovered to be orbiting a binary star.

every minute, 400 pounds of hydrogen and almost 7 pounds of helium escape from earth's atmosphere into outer space. Astrophysicist Anjali Tripathi studies the phenomenon of atmospheric escape, and in this fascinating and accessible talk,...

Astronomer Aomawa Shields searches for clues that life might exist elsewhere in the universe by examining the atmospheres of distant exoplanets. When she isn't exploring the heavens, the classically trained actor (and TED Fellow) looks...

Life on Earth requires three things: liquid water, a source of energy within a habitable range from the sun and organic carbon-based material. But life is surprisingly resilient, and organisms called extremophiles can be found in hostile...

Have you ever wondered if there is anyone (or anything) else out there in the universe? Well, you're not alone. But what would alien life look like? And what would their food chains and food webs look like? In this episode of Crash...

Another look at the Fermi Paradox, and the implication on us as a civilization.

It was the scene of the most cataclysmic natural disaster in American history, a place of unimaginable devastation. Today, the crater of Mt. St. Helens Volcano is experiencing a rebirth — it’s the site of the world’s newest glacier. Not...

What is Astrochemistry? How can ALMA help Astrochemistry and Astrobiology? What should you do if you want to work in these fields?<br/>
Discovery with the ALMA Telescope, Part 3

As NASA continues to discover thousands of new exoplanets, humans have increasingly asked: "Are we alone?" If other intelligent species exist in our universe, do they practice religion too? If so, how would human world religions react to...

If astrobiologists find life beyond Earth in the solar system, it will most likely be in the form of tiny organisms called microbes – nothing that would talk to us.

A great era of exploration of the icy moons is about to begin. Athena Coustenis of the Paris Observatory talks about missions to the icy moons of the outer solar system and international collaborations with NASA and ESA.

NASA has announced plans to launch the Europa Clipper space mission to examine Jupiter’s icy moon Europa by 2025.

Are we alone in the universe? This is a fundamental question that intrigues us all.



On September 21, 2016, NASA scientists and stakeholders came together at the Smithsonian National Air and Space Museum for...