According to Albert Einstein, faster-than-light travel is not possible in this universe. This has been a foundational law of modern physics. However, since 1995, the Hubble telescope has captured images of several objects that were estimated to travel at five times the speed of light. Moving faster than light In 1995, Robert Williams, who was ...
Just like the Moon orbits the Earth, and the Earth orbits the Sun, galaxies orbit each other according to the predictions of cosmology. For example, more than 50 discovered satellite galaxies orbit our own galaxy, the Milky Way. The largest of these is the Large Magellanic Cloud, or LMC, a large dwarf galaxy that resembles a ...
A NASA team uses supercomputing to evaluate a retropropulsion-powered descent to the Martian surface for a Mars landing. The type of vehicle that will carry people to the Red Planet is shaping up to be “like a two-story house you’re trying to land on another planet. The heat shield on the front of the vehicle ...
An international team of astronomers, led by the University of Southampton, has used state-of-the-art cameras to create a high frame-rate movie of a growing black hole system at a level of detail never seen before. In the process, they uncovered new clues to understanding the immediate surroundings of these enigmatic objects. The scientists published their work ...
The orbit of objects in the Kuiper Belt located at the edge of the solar system tilts the same way and points in the same direction. As a result, researchers have theorized that there might be a mysterious planet, dubbed Planet 9, lurking somewhere and exerting a gravitational pull on the objects. A new theory ...
Two University of Hawai’i at Mānoa researchers have identified and corrected a subtle error that was made when applying Einstein’s equations to model the growth of the universe that didn’t take into account certain characteristics of dark energy. Physicists usually assume that a cosmologically large system, such as the universe, is insensitive to details of ...
An international team of scientists has just discovered two massive bubbles at the center of our Milky Way Galaxy. The bubbles appear to be joined in the shape of an hourglass. It is hypothesized that these are the remnants of a huge cosmic explosion that took place in the galaxy some 7 million years ago. ...
K2-18b, which is eight times the mass of Earth, is now the only planet orbiting a star outside the Solar System, or “exoplanet,” known to have both water and temperatures that could support life. The discovery, published in Nature Astronomy, is the first successful atmospheric detection of an exoplanet orbiting in its star’s “habitable zone” ...
Suppose Albert Einstein’s theory of general relativity holds. In that case, a black hole, born from the cosmically quaking collisions of two massive black holes, should itself “ring” in the aftermath, producing gravitational waves much like a struck bell reverberating sound waves. Einstein predicted that these gravitational waves’ particular pitch and decay should be a ...
When people see images taken by the Apollo astronauts who landed on the Moon, they are often shocked by how bland space looks. The images show no stars. This gave rise to the belief that we could not see any stars in outer space. However, this is just a myth. In fact, we can actually ...
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