This segment is all about so-called "Near-Earth Objects," called "NEOs" for short. They are comets, asteroids, metors and man-made objects, as well. What have they done in the past, and what might they do in the future?

Astronaut Luca Parmitano talks to us from the Columbus European Space Laboratory. He explains why tadpoles can help us learn a lot about the weightless conditions of outer space.

A simple experiment with a bicycle pump shows us how rocket launchers work. Even though rockets were invented for war and for fireworks, they are also used for peaceful purposes.

Observing what happens when the air comes out of a balloon will help us understand how the launcher of a spacecraft works. An electrical propulsion engineer from ESA explains about different kinds of propulsion used in space exploration.

To reach outer space, the force of gravity has to be overcome, and that requires a certain "escape" velocity. That's where launchers come in.

One way to tell if there might be life on another planet is through light. Special telescopes, by way of prisms, analyze and break down the light from distant galaxies into parts. Luca Parmitano, an astronaut of the European Space Agency, speaks to us from the Columbus International Space Station.

Luisella Giulicchi, the system manager for the ESA Copernicus Sentinel six mission, explains what an exoplanet is. Two young researchers do a simple experiment to show us how infrared rays work.

Luisella Giulicchi, manager of the European Space Agency ESA, answers questions about light, infrared rays, and lightyears.

What is light? We use it every day, but where does it actually come from? The host suggests doing a little experiment. See if you can follow the instructions in Italian and try it yourself.

The last stop on our trip around Venice is the beautiful, uninhabited island of Torcello. Marika has a few stories to tell about it.

The Venetian island of Burano is famous for its multi-colored houses and for its lace. It's time to get your camera out, if you haven't already.

A short boat ride takes us from Venice to Murano, where they make some of the most beautiful glass in the world.

Marika takes us to the piazza where Marco Polo supposedly lived. But which house is it? She asks a local. The name of the square is Corte Seconda del Milion. Il Milion is the Italian name of the book, The Travels of Marco Polo.

Everyone has heard of St. Mark's Square, but Marika gives us some interesting tidbits of information and then takes us to a see a very special staircase.

Even if we have never been to Venice, we all know a gondola when we see one, but let's find out more about this elegant Venetian symbol.