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‘’The Weak Gravity Conjecture holds that in a theory of quantum gravity, any gauge force must mediate interactions stronger than gravity for some particles. This statement has surprisingly deep and extensive connections to many different areas of physics and mathematics. Several variations on the basic conjecture have been proposed, including statements that are much stronger but are nonetheless satisfied by all known consistent quantum gravity theories. We review these relat… See more.

The Weak Gravity Conjecture holds that in a theory of quantum gravity, any.

Gauge force must mediate interactions stronger than gravity for some particles.

This statement has surprisingly deep and extensive connections to many.

Continue reading “The Weak Gravity Conjecture: A Review” | >

Breakthrough Prize winner Alan Guth developed the theory of inflation to answer to our cosmic origins. It’s one of the most studied and debated theories in cosmology, with research propelling Guth’s work to the forefront of scientific conversation.

In this Master Class, Professor Guth addresses what experiments could potentially rule out the BICEP2 results. Since recording this in 2017, the Planck spacecraft collected the data that Professor Guth anticipated, which shows that the initial observations were likely an artifact of interstellar dust, not primordial gravitational waves.

This lecture was recorded on xyz at the World Science Festival in New York City.

Experience the associated free online course at World Science U:

Continue reading “WSU Master Class: Inflationary Cosmology with Alan Guth” | >

It’s the holy grail of spaceflight, and it could come sooner than many expect.

This month, Washington-based Radian Aerospace announced that it’s building a spaceplane that takes off and lands horizontally. The reveal sparked excitement about what could be considered the holy grail of the decades-old industry.

Christie Maddock, a lecturer in mechanical and aerospace engineering at the University of Strathclyde, says that the “alluring concept” has been around for nearly a century.

Continue reading “Single-stage-to-orbit: How the holy grail of spaceflight could soon become reality” | >

SOUTH BEND — The city council gave a unanimously positive recommendation Monday night for two tax abatements that could put South Bend at the epicenter of the hydroponic produce market in Indiana, and possibly the Midwest, for years to come.

JEM Farms South Bend plans to spend as much as $178 million on greenhouses and logistical equipment to grow tomatoes and strawberries throughout the year on land at Calvert Street and Renewable Drive, adjacent to the South Bend Ethanol Plant.

That facility would be located on land owned by Ceres Partners, the agricultural investment group located just south of the University of Notre Dame campus and the original investors in Pure Green Farms.

Read more | >

A study showed that 70% of consumers who have visited a virtual store have made a purchase, according to a survey by Obsess.

The survey, dubbed the Metaverse Mindset: Consumer Shopping Insights, measured the interest in brands creating immersive virtual stores on their own web sites and “metaverse” platforms.

Obsess is an experiential ecommerce platform that serves those brands. The study measured consumers’ perceptions of and demand for virtual shopping experiences in the metaverse, a market opportunity that Bloomberg Intelligence estimates will reach nearly $800 billion by 2024.

Read more | >

A SpaceX rocket that launched nearly seven years ago is now on course to crash into the moon, astronomers have predicted.

The Falcon 9 booster was launched in February 2015 as part of a mission to send a climate observation satellite 930,000 miles (1.5 million kilometers) from Earth, but since running out of fuel, the 4.4-ton (4 metric tons) rocket has been hurtling around space in a chaotic orbit.

The rocket is now expected to hit the far side of the moon while traveling at a blistering speed of 5,771 mph (9,288 km/h) on March 4, 2022, according to Bill Gray, the developer of software that tracks near-Earth objects.

The rocket stage has been tumbling through space for seven years.

Continue reading “Out-of-control SpaceX rocket will smash into the moon in weeks” | >