Eating is one of life’s great pleasures, even when orbiting 400 kilometres above the surface of the Earth. Learn how NASA is feeding today’s astronauts on the International Space Station (ISS) and see how they plan to feed tomorrow’s astronauts on a mission to Mars.
This YouTube video, by a teacher, explains the purpose of a hypothesis and how to construct one.
This YouTube video, from It’s Okay to Be Smart (PBS), explains the difference between the terms fact, theory, hypothesis and law in science.
This YouTube video, from teacher Courtney Mann, has information about creating well-defined, testable questions.
Astronaut Scott Kelly has posted images of the first ever flower grown in space. (1:05 min.)
Chris Hadfield demonstrates how spinach is rehydrated in preparation for a meal on the ISS. (1:20 min.)
Canadian astronaut Bob Thirsk and Belgian astronaut Frank De Winne discuss the different types of foods available on the ISS during their 2009 mission. (5:07 min.)
In this video Paul Andersen explains how matter moves from the environment into living organisms and back into the environment. Food webs are used to show how matter and energy move through organisms. Ecological pyramids show that matter and energy are lost as they move from producers to consumers.
High Definition time lapse of three tomato plants sprouting and growing. The days listed in the bottom left corner of the screen are days since planting. The text in the bottom right indicates when the plants were watered. (1:13 min.)
Is the weather on Mars anything like the weather on Earth? NOVA asked Vicky Hipkin from the Canadian Space Agency, who was part of the recent Phoenix Mission to explore conditions on the Red Planet.
Recently, astronauts were able to grow and eat lettuce in space! How was this possible?
As the International Space Station crew gets ready for the first on-orbit tasting of space-grown lettuce, NASA Commentator Lori Meggs talks with Paul Zamprelli of Orbitec, the company that developed the Veggie greenhouse with an eye toward supporting future deep space missions beyond Earth orbit.
NASA Commentator Lori Meggs speaks to researchers about Advanced Plant experiments on the International Space Station, in which they have already learned a great deal—and gotten some interesting surprises—about how plants grow in space.
Jessi and Squeaks show you how a tiny seed -- like the kind you eat in your trail mix! -- grows into a big plant!
In this video, discover the crucial factors in seed germination and learn how scientists are researching these factors to produce crops more quickly.