Giant helium balloons are a cheap, more environmentally friendly alternative to rocket launches – and you get the satellite back.
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There are thousands of sightings of UFOs – or ‘unidentified aerial phenomena’ as the US government prefers to call them – every year.
After shooting down a high-altitude Chinese balloon, the US has been on the alert for other aerial invaders.
Every country has sovereignty over their own airspace and permission must be sought by foreign aircraft entering that airspace.
A Chinese high-altitude balloon violated U.S. airspace, a serious enough breach to nix a high-level diplomatic meeting in Beijing. The balloon itself, however, was not much of a threat.
Plastic in the ocean is eaten by over 700 species, but just a few items are responsible for the most deaths.
Since 1989, the balloon industry has relied on a problematic study that claimed balloons degraded “at about the same rate as oak tree leaves” after six weeks. We put it to the test.
Kenya’s new internet balloons could help to get more Kenyans online and drive new industry.
Kontributor teratas
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Senior Principal Research Scientist, CSIRO
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Senior Principal Research Scientist, Environment, CSIRO
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Professor of International Law, Australian National University
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Lecturer in Ornithology, Charles Sturt University
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Visiting Fellow, Strategic Studies, Griffith University
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Professor of Strategy and Security Studies, Air University
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Professor of extragalactic astrophysics (dark matter and cosmology), Durham University
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Senior Research Fellow in Disruptive Technologies, Space/Environmental Ethics, Visual ethnographer, Durham University
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Research Scientist, Oceans and Atmospheres, CSIRO
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Director, Center for National Security Initiatives, and Professor of Aerospace Engineering Sciences, University of Colorado Boulder
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Adjunct Researcher in Marine Science, University of California, Santa Cruz
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Visiting Associate Professor, University of the Witwatersrand
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ARC DECRA Fellow, Institute for Marine and Antarctic Studies, University of Tasmania
