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Category: space travel – Page 49

Quantum effects forbid the formation of black holes from high concentrations of intense light, say physicists

For the last seven decades, astrophysicists have theorized the existence of “kugelblitze,” black holes caused by extremely high concentrations of light.

These special black holes, they speculated, might be linked to astronomical phenomena such as , and have even been suggested as the power source of hypothetical spaceship engines in the far future.

However, new research by a team of researchers at the University of Waterloo and Universidad Complutense de Madrid demonstrates that kugelblitze are impossible in our current universe. Their research, titled “No black holes from ,” is published on the arXiv preprint server and is forthcoming in Physical Review Letters.

First Nigerian set to fly to space for free

Expensive, risky and elite — that’s space travel in a nutshell ever since Yuri Gagarin became the first human to be sent to space 63 years ago. Till now, less than 700 astronauts have reached space altitude and a majority among them have been from just three countries. Even commercial space flights remain exclusive to the few who can afford them.

But not anymore. Giving regular folks from around the world a chance to become astronauts and participate in space science, US-based Space Exploration and Research Agency (SERA) has partnered with Jeff Bezos’ Blue Origin to develop what they call “a human spaceflight programme for citizens of all nations”. The cost will be borne by SERA, and co-founders Sam Hutchison and Joshua Skurla say they might even be tapping talent from India for their programme.

In line with this mission to make space accessible, SERA has just signed an agreement to send the first Nigerian to space. In June 2022, Victor Hespanha, a 28-year-old civil engineer from Brazil, was selected to travel to space onboard Blue Origin’s New Shepard Rocket (NS-22). He was only the second Brazilian astronaut, and soon became a national hero.

Cosmosphere gifted rocket engine from SpaceX

“The Cosmosphere is grateful to receive a flown Merlin engine from SpaceX,” said Jim Remar, Cosmosphere president and CEO. “The inclusion of the engine in our museum reaffirms the fact that the Cosmosphere houses one of the greatest collections of space exploration hardware.”

The Cosmosphere has been undergoing renovations since January. The Merlin engine will go on display in the new rocket gallery, which is expected to open in late 2024.

For more about the renovations underway at the Cosmosphere or to see upcoming events and programs, click here.

Strange Kinetics Shape Network Growth

A connection between time-varying networks and transport theory opens prospects for developing predictive equations of motion for networks.

Many real-world networks change over time. Think, for example, of social interactions, gene activation in a cell, or strategy making in financial markets, where connections and disconnections occur all the time. Understanding and anticipating these microscopic kinetics is an overarching goal of network science, not least because it could enable the early detection and prevention of natural and human-made disasters. A team led by Fragkiskos Papadopoulos of Cyprus University of Technology has gained groundbreaking insights into this problem by recasting the discrete dynamics of a network as a continuous time series [1] (Fig. 1). In doing so, the researchers have discovered that if the breaking and forming of links are represented as a particle moving in a suitable geometric space, then its motion is subdiffusive—that is, slower than it would be if it diffused normally.