Tag Archive for 'Acceleration'

This is an artist’s concept of a Type Ia supernova exploding in the intergalactic space between galaxies within a galactic cluster. Image credit: Alex Parker / NASA / SDSS.

New Supernova Study Confirms Universe’s Expansion is Still Accelerating

Jun 17, 2026 by News Staff

A fresh analysis of Type Ia supernovae overturns a controversial 2025 claim that cosmic expansion is slowing. Type Ia supernovae are a cornerstone of modern...

As planets and stars travel through the streams of charged particles flowing across space, their magnetic fields act like obstacles; incoming particles are slowed and deflected, forming a boundary called the bow shock; just ahead of this boundary lies the foreshock, a variable region where magnetic conditions can accelerate some particles to nearly the speed of light. Image credit: Ben C. Smith, Johns Hopkins Applied Physics Laboratory.

Jupiter Accelerates Electrons to Near-Light Speed, Offering Clues to Cosmic Ray Origins

Jun 5, 2026 by Enrico de Lazaro

The giant planet’s bow shock isn’t just deflecting the solar wind, it’s acting as a powerful particle accelerator, firing electrons to relativistic...

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

New Solution to Cosmic Acceleration Challenges Dark Energy Paradigm

Jan 12, 2026 by News Staff

Physicists from the Center of Applied Space Technology and Microgravity at the University of Bremen and the Transylvanian University of Brașov have unveiled...

This artist’s impression shows ‘Oumuamua, the first interstellar object discovered in our Solar System. Recent observations show that the object is moving faster than predicted while leaving the Solar System. Astronomers assume that venting material from its surface due to solar heating is responsible for this behavior. This outgassing can be seen in this artist’s impression as a subtle cloud being ejected from the side of the object facing the Sun. Image credit: NASA / ESA / Hubble / ESO / M. Kornmesser.

Astronomers Offer New Explanation for Interstellar Object Oumuamua’s Unusual Acceleration

Mar 23, 2023 by News Staff

The previously unreconciled acceleration of 1I/2017 U1 ‘Oumuamua, a strange object of extrasolar origin discovered on October 19, 2017 by the Pan-STARRS...

Gharib et al. draw upon a fresh look at one of da Vinci’s notebooks to show that the famed polymath had devised experiments to demonstrate that gravity is a form of acceleration -- and that he further modeled the gravitational constant to around 97% accuracy. Image credit: Caltech.

Leonardo Da Vinci’s Understanding of Gravity was Centuries Ahead of His Time

Feb 14, 2023 by News Staff

Despite limited tools, Leonardo da Vinci displayed ingenious problemsolving. In their new paper, Caltech Professor Mory Gharib and colleagues examined...