Astronomers have now tallied up more gravitational wave sightings than they can count on their fingers.
Scientists with the LIGO and Virgo gravitational wave observatories report four new sets of these ripples in spacetime. Those additions bring the total count to 11, the researchers say in a study published December 3 at arXiv.org, marking major progress since the first gravitational...
Astronomers have measured all the starlight that has managed to escape into space over the history of the universe.
It amounts to 4 x 1084 particles of light, or photons. That’s roughly equivalent to all the photons the sun would emit if it burned for 100 billion trillion years — long beyond the 5 billion years it has left. The universe itself is only 13.7 billion years old.
Letters to the Editor
Point, counterpoint11/21/2018 - 07:00 Science & Society, Planetary Science, Astronomy
In “The SN 10: These scientists defy limits to tackle big problems” (SN: 10/13/18, p. 18), Science News profiled 10 early- and mid-career scientists who are pushing boundaries to answer pressing questions facing science and society.
Some readers had strong reactions to the profiles.
Charles Eby praised stories about the SN 10 scientists. “Of course I love to...
There’s another oddly flickering star in the galaxy.
Astronomers using a telescope in Chile have discovered a star whose strange dimming and brightening of light are reminiscent of Tabby’s star, which was once suggested to host an alien megastructure.
The megastructure idea, first posited in 2015, was later quashed by data suggesting that the dips are probably from dust particles...
Meet the Kordylewski dust clouds, shimmering pseudo-satellites that orbit Earth near the moon. A team of Hungarian astronomers say they have spotted light scattered from one of these clouds, providing evidence that the clouds really exist after nearly 60 years of controversy.
The twin dust clouds gather at two of the points in space where the gravity of Earth and the moon cancel each...
News in Brief
Hubble worried astronomers when it ran into unexpected trouble recently, forcing mission scientists to put it into safe mode while they sorted the problem out. But the space telescope has more than made up for its time off since returning to work on October 26.
“Hubble is back to observing galaxies and stars, implementing programs that scientists around the world have proposed months ago...
In its younger days, the Milky Way devoured a smaller galaxy, and stars from the hapless victim still roam the skies today to tell the tale, a new study finds.
“This is a major event in the history of the galaxy,” says astronomer Amina Helmi of the University of Groningen in the Netherlands. “We’re really starting to probe the ancestors of the Milky Way.”
Helmi and her colleagues...
News in Brief
As far as close shaves with a black hole go, it doesn’t get much closer than this.
Scientists have spotted clouds of gas hurtling around the monster black hole at the center of the Milky Way, not far from the behemoth’s edge. Observed on three separate occasions, the gas clouds careened along at unimaginably fast speeds — 30 percent of the speed of light, researchers report October 31 in...
Letters to the Editor
Wonderwall10/17/2018 - 07:15 Astronomy, Biomedicine, Genetics
An ultraviolet glow spotted by NASA’s New Horizons spacecraft may signal a hydrogen wall that separates the solar system from the rest of the Milky Way galaxy, Lisa Grossman reported in “New Horizons may have seen a glow at the solar system’s edge” (SN: 9/15/18, p. 10).
Online reader RayRay wondered if researchers could see similar walls at the edges of other solar...
First Man is not a movie about the moon landing.
The Neil Armstrong biopic, opening October 12, follows about eight years of the life of the first man on the moon, and spends about eight minutes depicting the lunar surface. Instead of the triumphant ticker tape parades that characterize many movies about the space race, First Man focuses on the terror, grief and heartache that led to...