Researchers simulate Hawking radiation from optical analogue of an event horizon. This optical system isn’t gravitational but the mathematics describing it is very much similar to that of general relativity that applies to real black holes...
Astronomers found a new component that reveals interesting insights into the death of massive stars. It’s a sort of hot cocoon accompanying jets of matter at the surface of the progenitor star. The death of a star depends on what type of...
Physicists make precise replicas of asteroids and blast them with a powerful laser beam. It took 500 joules of energy to blast a 10-millimeter wide replica. If Earth collides with a large asteroid, its impact would be far greater than other...
TESS discovers its third exoplanet named HD 21749b. It orbits a dwarf star every 36 days, and has a surface temperature of about 150°C. It is the longest-period transiting exoplanet discovered so far within 100 light-years. In April 2018, NASA...
Researchers develop a new technique to detect dark matter in galaxy clusters. It tracks faint light coming from a few stars that are not part of any galaxy. Then it analyzes the starlight data to see how dark matter is distributed in space. In the...
The shiny blue marble (Earth) has fascinated us since we have first begun to walk across its surface. To date, it remains the only planet we know of where life exists. Over the past few centuries, we have learned a lot about Earth, but how much does...
Researchers create VR display of what remains after a star dies. They built a model of a supernova remnant called Cassiopeia A, using data from Chandra X-ray Observatory and Spitzer Space Telescope. Cassiopeia A is the youngest known supernova...
Researchers examine data of 7 million stars obtain from Gaia space observatory. They found 30,000 stars moving in odd-directions in our galaxy. These stars belong to a different galaxy named Gaia-Enceladus. The assembly of the Milky Way galaxy can...
Astronomers found a new class of exoplanets orbiting too close to their host stars. These so-called super-Earths consist largely of aluminum, calcium and their oxides such as ruby and sapphires. Most planets and exoplanets (planets outside our...
The new study suggests dark matter is blowing like a hurricane in the Milky Way region. It might leave signals that could be detected in future dark matter searches. Scientists were surprised when they first noticed that galaxies do not rotate by...
Saturn’s ring particles are flowing into the planet at the rate of 432 – 2870 kilograms per second. At this rate, the rings will be gone in less than 300 million years. The rings of Saturn make the 2nd largest planet a standout in our...
Astronomers observe unusual binary stars that have a mass ratio of 80:1. The observation has been made possible by a large telescope network, Atacama Large Millimeter Array. One of these stars is 40 times more massive than our Sun, while the other...
