Curious Kids: what are the rings around planets made of?

Saturn, Jupiter, Neptune and Uranus all have rings.

Maggie Lieu, Research Fellow, School of Physics and Astronomy, University of Nottingham • conversation
Nov. 23, 2021 ~5 min

What Is Space Junk and How Dangerous Is it?

VOA Learning English • voa
Nov. 20, 2021 ~4 min


Russian anti-satellite weapon test: What happened and what are the risks?

Russia destroyed one of its old satellites during a successful test of an anti-satellite weapon. A space security expert explains what this weapon was and the dangers of the expanding debris field.

Wendy Whitman Cobb, Professor of Strategy and Security Studies, US Air Force School of Advanced Air and Space Studies • conversation
Nov. 16, 2021 ~8 min

Near-Earth asteroid might be a little piece of the moon

The near-Earth asteroid Kamo`oalewa might be a lost piece of the moon. "This spring, we got much needed follow-up observations and went, 'Wow it is real.'"

Mikayla Mace-Arizona • futurity
Nov. 15, 2021 ~5 min

Have we made an object that could travel 1% the speed of light?

The fastest things ever made by humans are spacecraft, and the fastest spacecraft reached 330,000 mph – only 0.05% the speed of light. But there are ways to go faster.

Chris Impey, University Distinguished Professor of Astronomy, University of Arizona • conversation
Nov. 15, 2021 ~5 min

‘Eggshell planets’ are probably not right for life

"Eggshell planets" have an ultra-thin outer brittle layer and probably no plate tectonics. That raises questions about their habitability.

Talia Ogliore-WUSTL • futurity
Nov. 11, 2021 ~8 min

Fifty years ago, humans took the first full photo of Earth from space – the climate crisis means it's time for another

Photographing the full Earth from space could provide a profound and timely reminder of its vulnerability in the face of climate change.

Robert Poole, Professor of History, University of Central Lancashire • conversation
Nov. 5, 2021 ~7 min

50 years ago, humans took the first full photo of Earth from space – the climate crisis means it's time for another

Photographing the full Earth from space could provide a profound and timely reminder of its vulnerability in the face of climate change.

Robert Poole, Professor of History, University of Central Lancashire • conversation
Nov. 5, 2021 ~7 min


Comet’s intense heat turned sand to glass 12,000 years ago

Heat from a comet exploding just above the ground in what is now the Atacama Desert in Chile fused sandy soil into patches of glass around 12,000 yeas ago.

Kevin Stacey-Brown • futurity
Nov. 5, 2021 ~7 min

A small telescope past Saturn could solve some mysteries of the universe better than giant telescopes near Earth

Such a mission could be developed soon, allowing astrophysicists to take selfies of the solar system and use the Sun’s gravity as a lens to peer deep into space.

Michael Zemcov, Associate Professor of Physics, Rochester Institute of Technology • conversation
Nov. 1, 2021 ~9 min

/

113