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Dark matter may be older than the big bang, study

Dark matter may have existed before the big bang, study

Testing the origin of dark matter by observing the signatures dark matter leaves on the distribution of matter in the universe.
The evolution of land plants (simplified). Around 500 million years ago land plants started to spread from water to land. © IST Austria

When plant roots learned to follow gravity

Scentists have identified crucial components and processes which only developed in seed plants around 350 million years ago to enable fast and efficient gravity-driven root growth.
An artistic visualization of the star S0-2 as it passes by the supermassive black hole at the galactic center, which has warped the geometry of space and time. As the star gets closer to the supermassive black hole, its light undergoes a gravitational redshift that is predicted by Einstein’s general theory of relativity. (National Science Foundation graphic by Nicolle R. Fuller)

Milky Way’s central black hole puts theory of general relativity to the test

Almost a century later, Albert Einstein published his iconic theory of General relativity. Now, scientists at the University of California, Los Angeles have tested...
Physicists just made the most precise measurement ever of Gravity's strength

Physicists just made the most precise measurement ever of Gravity’s strength

The Newtonian gravitational constant, G, is one of the most fundamental constants of nature, but we still do not have an accurate value for...

Old star clusters could have been the birthplace of supermassive stars

The Milky Way galaxy has more than 150 old globular clusters, each containing a huge number of stars densely packed together and held by...
Scientists Finally Calculated The Speed of Gravity

Scientists Finally Calculated The Speed of Gravity

Recently, scientists made groundbreaking detections that allowed them that gravity does not act instantaneously as Newton thought, instead it propagates at the speed of light. Neil...
Finding the Missing Nature's Fifth Force

Finding the Missing Nature’s Fifth Force

There are four fundamental forces that drive the universe. They are as gravity, electromagnetic, and the strong and weak nuclear forces. But, now scientists are...