Tag Archive for 'Gravity'

This illustration reveals how the gravitation of the white dwarf Stein 2051B warps space and bends the light of a distant star behind it. The NASA/ESA Hubble Space Telescope captured images of Stein 2051B as it passed in front of the background star. During the close alignment, Stein 2051B deflected the starlight, which appeared offset by about 2 milli-arcseconds from its actual position. From this measurement, astronomers calculated that the white dwarf’s mass is roughly 68% of the Sun’s mass. Image credit: NASA / ESA / A. Field, STScI.

Hubble Measures Deflection of Star’s Light by Foreground White Dwarf

Jun 7, 2017 by News Staff

The first observation of displacement of a star due to bending of its light by another celestial body other than our Sun is revealed in new research. This...

A simulated black hole of 10 solar masses as seen from a distance of 370 miles. Image credit: Ute Kraus, Universität Hildesheim / Axel Mellinger / CC BY-SA 2.5.

Naked Singularities Can Form in ‘Saddle-Shaped’ Universe, Physicists Say

May 23, 2017 by News Staff

A team of theoretical physicists at the University of Cambridge, UK, has used computer simulations to predict the existence of a so-called naked singularity,...

A present-day near-miss of two spiral galaxies NGC 5426 and NGC 5427, which may be comparable to the early flyby of the Andromeda galaxy past our own Milky Way Galaxy. Image credit: ESO.

Discovery Challenges Our Current Understanding of Gravity

Mar 16, 2017 by News Staff

Einstein’s theory of gravity may have to be rewritten, after a team of astronomers at the University of St Andrews discovered a 10-million-light-year-wide...

Hubble Frontier Fields view of a distant galaxy cluster. Image credit: NASA / ESA / HST Frontier Fields Team / STScI.

First Observational Evidence of Holographic Universe?

Jan 30, 2017 by News Staff

A ground-breaking study released in the journal Physical Review Letters (arXiv.org version) offers what its authors call ‘the first observational evidence...

The pale blue Earth serves as a backdrop for astronaut Michael Gernhardt, who is attached to the Shuttle Endeavour’s robot arm during a spacewalk on the STS-69 mission in 1995. Unlike earlier spacewalking astronauts, Gernhardt was able to use an electronic cuff checklist, a prototype developed for the assembly of the International Space Station. Image credit: NASA.

Long-Duration Spaceflight Affects Spinal Muscles of Astronauts, New Study Shows

Oct 27, 2016 by News Staff

Long-flight astronauts have atrophy of the muscles supporting the spine — and they don’t return to normal even after several weeks back on Earth,...

This view of the Martian gravity map shows the Tharsis volcanoes and surrounding flexure: the white areas in the center are higher-gravity regions produced by the massive Tharsis volcanoes, and the surrounding blue areas are lower-gravity regions that may be cracks in the crust. Image credit: MIT / UMBC-CRESST / GSFC.

NASA Scientists Release Map of Mars’ Gravity

Mar 22, 2016 by News Staff

A team of researchers led by Dr. Antonio Genova of NASA’s Goddard Space Flight Center has released a detailed new map of Mars’ gravity. This view of...

This image shows the ancient globular cluster Terzan 5, home to PSR J1906+0746. Image credit: ESA / NASA/ Hubble.

Researchers Measure Space-Time Warp in Gravity of Binary Star

Jan 9, 2015 by News Staff

A team of astrophysicists headed by Dr Joeri van Leeuwen of the Netherlands Institute for Radio Astronomy and the University of Amsterdam has successfully...

This artist's concept shows what the very early Universe might have looked like. Image credit: NASA / JPL-Caltech / R. Hurt / SSC.

Gravity May Have Saved Very Early Universe – Study

Nov 20, 2014 by News Staff

A team of physicists from Denmark, Finland and the United Kingdom, led by Dr Matti Herranen University of Copenhagen, says that the spacetime curvature...

The millisecond pulsar PSR J0337+1715, left foreground, is orbited by a hot white dwarf star, center, both of which are orbited by another, more-distant and cooler white dwarf, top right. Illustration by Bill Saxton / NRAO / AUI / NSF.

Triple-Star System Can Give Clues to True Nature of Gravity

Jan 6, 2014 by News Staff

Astronomers have discovered a unique stellar system of the superdense pulsar PSR J0337+1715 and two white dwarfs, all packed within a space smaller than...

The International Space Station, as seen from Space Shuttle Endeavour in 2011. Image credit: NASA.

Space’s Microgravity Accelerates Biological Aging of Some Cells, Scientists Say

Nov 1, 2013 by News Staff

According to a team of researchers led by Dr Silvia Bradamante from Institute of Molecular Science and Technologies in Milan, Italy, microgravity accelerates...

The times and vertical (y) annihilation locations (green dots) of 10,000 simulated antihydrogen atoms in the decaying magnetic fields. There is a tendency for the anti-atoms to annihilate in the bottom half of the trap, as shown by the black solid line. The blue dotted line includes the effects of detector azimuthal smearing on the average; the smearing reduces the effect of gravity observed in the data. The red circles are the annihilation times and locations for 434 real anti-atoms, as measured by the particle detector (A. E. Charman, the ALPHA Collaboration)

Physicists Attempt to Measure Gravitational Mass of Antihydrogen

May 1, 2013 by News Staff

A team of researchers working with CERN’s Antihydrogen Laser Physics Apparatus (ALPHA) has reported the first direct measurement of gravity’s effect...

Study Tries to Explain How Plants Sense Gravity

Feb 15, 2013 by Natali Anderson

A new research published in the recent issue of the American Journal of Botany tries to explain how plants sense gravity, and how they direct or signal...

Astronomers See Gravitational Waves from White-Dwarf Pair

Sep 6, 2012 by Sergio Prostak

A multinational team of astronomers led by University of Texas researchers has spotted the first visible-light evidence for gravitational waves in a binary...

Hubble Discovers Rare Gravitational Arc

Jun 27, 2012 by Sergio Prostak

An international team of astronomers using NASA’s Hubble Space Telescope has discovered a puzzling arc of light behind an extremely massive cluster...

Study Demonstrates Gravity Determines Handedness of Molecular Screws

Mar 5, 2012 by News Staff

Researchers have for the first time demonstrated that gravity plays a role in the formation of molecular aggregates, and that it can even be used to make...

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