Space news stories
One of the more intriguing unsolved modern mysteries is the fast radio burst (FRB) phenomenon. Over the last several years, radio telescopes on Earth have been detecting more and more very brief, very powerful radio signals which originate from deep space. While astronomers have been able to locate the source of several of these signals, the exact mechanisms of their production remain a mystery.
Einstein’s greatest theory has aced another test. Two stars are speeding around the big black hole at the Milky Way’s core in just the way his general theory of relativity predicted.
“It’s the first time that general relativity is really tested around a supermassive black hole,” says Aurélien Hees at the University of California, Los Angeles.
Earth and its parent galaxy are living in a cosmic desert — a region of space largely devoid of other galaxies, stars and planets, according to a new study.
The findings confirm the results of a previous study based on observations taken in 2013.
Researchers from the University of Zurich have simulated the formation of our entire universe with a large supercomputer. A gigantic catalogue of about 25 billion virtual galaxies has been generated from 2 trillion digital particles. This catalogue is being used to calibrate the experiments on board the Euclid satellite, that will be launched in 2020 with the objective of investigating the nature of dark matter and dark energy.
A prescription for wormholes that transmit light invisibly between remote regions has been devised by a team of researchers. These ‘electromagnetic wormholes’ are the light-based equivalent of space-time wormholes, the staples of science fiction that permit time travel and create short cuts across intergalactic space. They could one day be used in three-dimensional (3D) video-display units wired up with invisible light-carrying cables.
To anyone but a physicist, it sounds like something out of “Star Trek.” But lepton universality is a real thing.
It has to do with the Standard Model of particle physics, which describes and predicts the behavior of all known particles and forces, except gravity. Among them are charged leptons: electrons, muons and taus.
The Hubble telescope just weighed a star using a technique the famed physicist described but said humanity would have “no hope” of using.
Alt: Astronomers saw one star warp another’s light in a way that Einstein thought we’d never see
Humans observing the sky as they walked out of Africa millennia ago would have seen different night skies than the ones people see today. And humans in the far future will see another, different celestial landscape.
Self-proclaimed ‘space nation’ Asgardia will launch a satellite later this year to test the concept of long-term data storage in orbit around the Earth. This potentially opens the door to off-planet data and tax havens, according to filings obtained by Motherboard, and represents an important step towards the group’s proclaimed goal of starting a private nation in space.
Carl DeVito, an emeritus faculty in the mathematics department at the University of Arizona in Tucson, has proposed a language based on plausibly universal scientific concepts.
An astronomer thinks he’s pinpointed the source of a mysterious radio signal from space: a passing comet that nobody knew about. But his colleagues said they’re still skeptical of the explanation, noting that comets don’t emit radio waves in the right way.
Alt: Astronomer Who Discovered The “Wow!” Signal Says We Still Don’t Understand Its Origin
The origin of the xenon in Earth’s atmosphere has been a mystery for decades. Now, using data from the Rosetta spacecraft’s tight orbits around a comet, researchers have determined that 22 per cent came from comets. This strengthens suspected connections between these celestial bodies and Earth’s evolution.
Aside from all the neato deep space exploration NASA conducts, one of the space agency’s responsibilities includes keeping track of all the potentially dangerous objects hurtling around our own neck of the space woods. NASA tracks over 15,000 so-called near-Earth objects (NEOs), many of which have been passing uncomfortably close to Earth lately.
Bacteria riding on an incoming meteorite may be able to survive the violent shockwave created when it crash-lands on a planet. Their cell walls have been seen to rapidly harden and relax after a sudden shock compression, enabling them to bounce back even after an extreme collision.
New research shows that astronauts traveling beyond the Earth’s geomagnetic sphere are at a risk for cancer that’s twice as high as previously thought. The study’s team points out that this research must inform all protective measures in space.
This 70 km-wide crater and its surrounds offer a window into the watery past of the Red Planet.
The scene, captured by ESA’s Mars Express, is a composite of two images taken in March 2007 and February 2017.