Gravity, features and articles | Educational Science

Aug 10, 2007

Greatest Mysteries: What Causes Gravity?

Editor's Note: We asked several scientists from various fields what they thought were the greatest mysteries today, and then we added a few that were on our minds, too. This article is one of 15 in LiveScience's Greatest Mysteries series running each weekday. In the deepest depths of space, gravity...

Oct 15, 2008

Tiny Tide Travelers May Sense Gravity

Life is no beach for tidal creatures that must migrate in sync with the waterline. Imagine trying to gauge the tides that sweep through a Kenyan mangrove forest: how far the water rises up a given tree depends on the season, the phase of the moon, and the tree's position....

May 12, 2010

Best Visual Illusion Of 2010 Defies Gravity

WASHINGTON (ISNS) -- On May 10, Japanese scientist Kokichi Sugihara claimed to have discovered a technology that every sixth grader knows to be impossible: a magnet that attracts wood. In front of a crowd of hundreds, he played a video showing four wooden balls rolling up four ramps, supposedly pulled...

Oct 13, 2010

Gravity at Small Scales Remains a Mystery

WASHINGTON (ISNS) -- Scientists know how gravity works at big distances -- the inter-planetary or inter-stellar range -- but does it work the same way at the inter-atomic range? A variety of tabletop experiments are trying to explore this issue. Already some theorists say that a departure from conventional gravity...

May 4, 2011

6 Weird Facts About Gravity

Gravity: You don't know what you've got 'til it's gone Astronaut Loren J. Shriver pursuing floating chocolate-covered peanut M&M's on the aft flight deck of the shuttle Atlantis. (Image credit: NASA)Here on Earth, we take gravity so for granted that it took an apple falling from a tree to trigger...

May 10, 2011

NASA Gravity Probe Confirms Two Einstein Theories

A NASA probe orbiting Earth has confirmed two key predictions of Albert Einstein's general theory of relativity, which describes how gravity causes masses to warp space-time around them. The Gravity Probe B (GP-B) mission was launched in 2004 to study two aspects of Einstein's theory about gravity: the geodetic effect,...

Jun 15, 2011

Defying Gravity: Tokyo Photographer 'Levitates'

Natsumi Hayashi makes flying look easy. But the self-portraits that seem to show the Toyko photographer levitating above the ground are actually the result of a lot of hard work. Sometimes I need to jump more than 300 times to get the perfect shot, Hayashi told MSNBC.com on June 8....

Jan 9, 2012

What If There Were No Gravity?

There's nothing like a nasty cold to make you appreciate good health. The same goes for the state of the universe: Tweaking just one of the fundamental physical laws or constants, normally perfectly fine-tuned at the right values to allow stars, planets, atoms and life as we know it to...

Jan 24, 2012

Infants Grasp Gravity with Innate Sense of Physics

Infants as young as 2 months old already have basic knowledge of intuitive physics, researchers report in a new study. Most studies into infant cognition employ eye-tracking technology — psychologists can tease out what an infant is thinking and what she considers to be unexpected by following her gaze in...

Mar 21, 2012

Globe-Trotting Gnome: Images of a Gravity Experiment

Kern at the South Pole (Image credit: The Gnome Experiment)Gravity, the force that draws objects together in proportion to their mass, varies depending on where you're standing on Earth. That's because our planet is not a perfect sphere with uniform density. With varying gravity, an object's weight also changes. Now...

Mar 21, 2012

Globe-Trotting Gnome Highlights Earth's Weird Gravity

There aren't too many gardens at the South Pole. But there are, apparently, garden gnomes. A globe-trotting little garden gnome dubbed Kern recently visited Amundsen-Scott Research Station at the geographic South Pole in Antarctica. The inanimate traveler's trip was a take on the Traveling Gnome Prank, a joke that's been...

Jun 4, 2012

Mystery of Guinness Stout Bubbles Solved

The mystery of why the bubbles in the legendary beer Guinness sink as opposed to rise as one might expect has finally been solved — the secret apparently lies in the shape of the pint glasses from which Guinness is often sipped, researchers in Ireland say. After one pours a...

Aug 10, 2012

How an 'Anti-Gravity Treadmill' Helps Olympic Runners Recover from Injuries

Olympic runners may seem superhuman — able to race around the track without appearing to break a sweat — but they can suffer wear and tear in their joints just like the rest of us. This was the certainly case for U.S. Olympic runner Jenny Simpson, a medal contender in...

Aug 16, 2012

Hunt Is On for Gravity Waves in Space-Time

Because black holes are impossible to see, one of scientists' best hopes to study them is to look for the ripples in space-time, called gravitational waves, that they are thought to create. Gravitational waves would be distortions propagating through space and time caused by violent events such as the collision...

Dec 5, 2012

Mysterious Gravity Waves May Explain Clear-Skies Turbulence

SAN FRANCISCO — Gravity waves, mysterious waves that ripple unseen throughout the atmosphere, may be a major source of airplane turbulence, a new study suggests. The new findings, presented Tuesday (Dec. 4) here at the annual meeting of the American Geophysical Union, may help explain why planes get shaky in...