China is building a laser that can produce 100 quadrillion watts – about 50,000 times the planet’s total power consumption a light so intense that it would equal the amount of power our Earth receives from the Sun.
Station of Extreme Light
At the heart of the Shanghai Superintense Ultrafast Laser Facility (SULF), due to go online in 2025,is a single cylinder of titanium-doped sapphire about the width of a Frisbee. After kindling light in the crystal and shunting it through a system of lenses and mirrors, the SULF distills it into pulses of mind-boggling power, achieving an unprecedented 5.3 million billion watts, or petawatts (PW), reported Science.
On March 2, 2019, astronomers reported discovery of a dozen black holes gathered around Sagittarius A (Sgr A ), the supermassive monster in the center of the Milky Way Galaxy, supporting a decades-old prediction. After conducting a cosmic inventory to calculate and categorize stellar-remnant black holes, the astronomers from the University of California concluded that there are probably tens of millions of the enigmatic, dark objects in the Milky Way – far more than expected.
Star S2 orbiting Sagittarius A
Now, observations made with ESO’s Very Large Telescope (VLT) have revealed for the first time that a star, named S2, orbiting Sgr A (artist impression above) –at the very edge of where space-time breaks down. The star moves in an egg-shaped orbit just as predicted by Einstein’s general theory of relativity. Its orbit is not like an ellipse as predicted by Newton’s theory of gravity. This long-sought-after result was made possible by increasingly precise measure
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Astronomers have discovered a new, bizarre type of cosmic object, ORC J0102–2450, while using the Australian Square Kilometer Array Pathfinder telescope. The colossal object is now the third odd radio circle (ORC) that is invisible to all wavelengths of light except radio
with an elliptical galaxy at its geometrical center.
The objects appear in radio images as circular edge-brightened discs, observe the researchers. about one arcmin in diameter, that are unlike other objects previously reported in the literature. Astronomers have explored several possible mechanisms that might cause these objects, but none seems to be a compelling explanation.
The strange circular objects in question have been dubbed “Odd Radio Circles” (ORCs); three of them were recently discovered in data captured during a preliminary survey by the Australian Square Kilometer Array Pathfinder, a radio telescope array in Western Australia. A fourth was discovered when researchers sifted through old
A solar day, or Sol, on Mars is 24 hours, 39 minutes and 35 seconds. Not so for Earth’s closest neighbor, Venus: new radar measurements show that an average day on Venus lasts 243.0226 Earth days roughly two-thirds of an Earth year. A UCLA-led team pinned down the precise length of a day on Venus, the tilt of its axis, and the size of its core.
They also discovered that the rotation rate of Venus is always changing: a value measured at one time will be a bit larger or smaller than a previous value. The team estimated the length of a day from each of the individual measurements, and they observed differences of at least 20 minutes.