The war in Ukraine is also affecting the country's science community. Several educational institutions have been destroyed and scientists have been forced to flee. We met two biologists from Kyiv who are now pursuing their cancer research in France.

The moon has been orbiting the Earth for billions of years. The first moon missions over fifty years ago helped reveal its secrets. Now it is once again becoming a focus of research and space travel, not least due to its raw materials.

Engineers and researchers at Spain's Granada University have developed a smart FFP2 mask. The intelligent face covering warns wearers via their smartphone app when CO2 concentrations are getting too high.

The viewer's question this week comes from Yessenia Quinones from Puerto Rico.

This week's question comes from Nahin Medina in Paraguay, who wants to know why sound is slower than light.

Our viewer's question this week comes from Arnulfo Quintanilla from El Salvador.

"Space mathematics is more challenging than the mathematics on the ground," says German astronaut Matthias Maurer, currently living on board the International Space Station. Why is that? How does weightlessness affect our body?

The James Webb Space Telescope takes us deeper into space than ever before. It also brings astronomer Knud Jahnke much closer to black holes. But how do they form? How do they affect galaxies and why do they exert such a pull on their surroundings?

How does space-based internet access work? Is it possible to provide satellite internet coverage for even the remotest regions on Earth? How fast is it and what are the downsides — and is it any good for the environment?

This week's Tomorrow Today viewer question comes from C. Romero Vargas in San José, Costa Rica.