Gravity
Hilarious Viral Video Demonstrates Gravity on Other Planets by Smashing Car
The video does take some liberties—in the section demonstrating gravity on the Sun, the car has not vaporized from the heat. In fact, it's not even on fire.
5 Unexplained Mysteries of the Universe
For decades, scientists have been boggled by outstanding questions about the fundamental nature of everything.
Scientists Use Extreme Stars to Test Limits of Einstein's Greatest Theory
Physicists tried for 16 years to find flaws in Albert Einstein's ground-breaking theory of general relativity, which is the best description of gravity we have.
New Model of the Universe Does Away With Dark Matter
The new research suggests a modified theory of gravity that can explain the large-scale structure of the Universe.
Scientists Accidentally Discover Galaxy After Studying Weird Reflection
The galaxy was spotted by the Hubble Space Telescope as a distorted double image called Hamilton's Object, caused by a ripple in space created by dark matter.
Galaxy Looks Like Molten Ring Due to Phenomena Predicted by Einstein
The galaxy, which is 9.4 billion light-years from Earth, appeared to the Hubble Space Telescope as a cosmic illusion known as an Einstein Ring.
Gravity Energy Project Generates Electricity by Plunging Weight Down Shafts
Gravitricity's renewable energy project works by raising heavy weights in a deep shaft and releasing them when energy is required. Work on a concept storage prototype has now started.
Watch Apollo Astronauts Falling Over on the Moon
Over the course of the Apollo moon missions in the 1960s and 1970s, several NASA astronauts walked on the lunar surface.
Alternative to Einstein's Gravity Could Explain How Galaxies Form
Einstein's general theory of relativity beautifully describes the nature of gravity and its effect on large objects in the universe. However, there are alternative explanations.
Time Travel is Possible—But There's a Catch
This new model does not require any negative mass exotic material and offers a very simple design.
U.S. Open Inspires First Tennis Match in Space
Astronauts were allowed to hit under and over the net and decided that the primary goal was in continuing to get the ball past the net in conditions that lack a gravitational constant.
This Is How the Universe May Die
Any potential end is still 30 to 40 billions of years away, researchers said, but there's hope the universe could expand infinitely.
Watch Astronauts Falling Over on the Moon
Low gravity, surprising surfaces and chunky suits make a recipe for tumbling.
Russia Wants a Space Spa For Astronauts, With Sauna
Astronauts on the International Space Station do not even have sinks because of the way water behaves in microgravity.
Gravity Could Trap Alien Civilizations on Super-Earths
Stronger gravity requires stronger—and pricier—rockets to overcome.
A Brief History of My Friend Stephen Hawking
Millions have had their cosmic horizons widened by his best-selling books; and even more, around the world, have been inspired by a unique example of achievement against all the odds.
Atomic Clocks Can Measure the Height of a Mountain
Scientists hit the road with a high-precision clock hooked up to a trailer.
Alien Life Could Exist Even Without Weak Nuclear Force
Weak nuclear force is stronger than gravity, but weaker than, you know, strong nuclear force.
Isaac Newton Celebrates Birthday on Christmas
Thank Newton for our understanding of rainbows and the motion of soccer balls.
New 'Take Me Home' Button Could Save Astronauts' Lives
The recently patented technology could one day save an astronaut from becoming lost in space.
Huge Earthquakes Change the Strength of Gravity
Because the change travels at the speed of light, it could tell scientists the real size of an earthquake in just three minutes.
Neil deGrasse Tyson's Film and TV Reviews: A Brief List
The astrophysicist most recently chimed in about "Titanic." Is he veering away from his strictly science-based reviews?
Hubble Captures New Star Images With Help From Gravity
The galaxy in question appears as it was 11 billion years ago, just 2.7 billion years after the Big Bang.
Weighing a Star: Einstein's Impossible Hope Achieved
Einstein predicted that gravity and light could be used to calculate the mass of a star. But he never thought scientists could actually do it.
Universe Could Expand 'Forever,' Suggests New Theory
The theory breaks with the popular idea that expansion is caused by dark energy and suggests energy for expansion would never run out.
'Newsweek' at HowTheLightGetsIn Festival
Panels at the philosophy and music festival feature discussions of topics as varied as sexuality, feminism, gravity and democracy.
How Reid Wiseman Tweeted Through His Space Mission
An American flight engineer who landed back on Earth in Kazakhstan Monday documented his months-long journey on social media.