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Daily Archives: 08.11.2021

Travel to US reopens for fully vaccinated

Family and friends on both sides of the Atlantic will be able to reunite again The United States has begun admitting air travellers from Ireland and several dozen other countries who are fully vaccinated against Covid-19. Restrictions, introduced 20 months ago in the early stage of the pandemic by then US President Donald Trump, had barred non-US citizens who were ...

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A System for General In-Hand Object Re-Orientation

In-hand object reorientation, i.e., picking an object, reorienting it in hand, and then placing it or using it as a tool, is a common maneuver for humans. However, this task in robotics remains an active area of research due to several unsolved issues. Object re-orientation is a difficult task for machines. Image credit: Jeremy Tarling via Wikimedia, CC-BY-SA-2.0 A recent ...

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Ariane 5 fairing cleared for Webb launch after “perfect” performance on last flight

Artist’s illustration of the payload fairing jettisoning from an Ariane 5 rocket, revealing the James Webb Space Telescope. Credit: ESA/D. Ducros The payload fairing on the most recent Ariane 5 launch last month worked perfectly, according to the European Space Agency, helping clear concerns about the shroud before liftoff of the James Webb Space Telescope on the next Ariane 5 ...

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Experiment Finds no Sign of Sterile Neutrinos

We don’t know what dark matter is. We do know the characteristics of dark matter, and much of how it behaves, so we know what physical properties dark matter must have, but no known matter has all the necessary characteristics of dark matter. So we’re stumped. The closest thing we have is neutrinos. They only interact weakly with other matter ...

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