Heavens

A fireball in the sky, accompanied by a bang, amazed hundreds of eyewitnesses in northern Germany in mid-September last year. The reason for the spectacle was a meteoroid entering the Earth's atmosphere and partially burning up. One day after the observations, a citizen in Flensburg found a stone weighing 24.5 grams and having a fresh black fusion crust on the lawn of his garden.

The Breakthrough Listen Initiative today (Friday, Feb. 14) released data from the most comprehensive survey yet of radio emissions from the plane of the Milky Way Galaxy and the region around its central black hole, and it is inviting the public to search the data for signals from intelligent civilizations.

UNIVERSITY PARK, Pa. -- Data from a massive search for cosmic radio emission released Feb 14. by the Breakthrough Listen Initiative--the most comprehensive survey yet of radio emissions from the Milky Way--has allowed astronomers to look for technological signatures of extraterrestrial civilizations that might be looking for us.

A new study led by the University of Hawai'i (UH) at Mānoa has helped refine understanding of the amount of hydrogen, helium and other elements present in violent outbursts from the Sun, and other types of solar "wind," a stream of ionized atoms ejected from the Sun.

Using ESO's Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The stunning new images of the star's surface show not only the fading red supergiant but also how its apparent shape is changing.

A co-author from Kazan University, Professor, Corresponding Member of the Tatarstan Academy of Sciences, Chair of the Department of Astronomy and Space Geodesy Ilfan Bikmaev, explains how the new system was found.

Citizen scientists have uncovered a bizarre pairing of two brown dwarfs, objects much smaller than the Sun that lack enough mass for nuclear fusion. The discovery, reported in The Astrophysical Journal and confirmed by a scientific team led by astrophysicist Jackie Faherty at the American Museum of Natural History, shows that brown dwarf systems--the formation of which are still poorly understood--can be very low mass and extremely far apart yet inexorably linked.

Maunakea, Hawaii - A team of astronomers led by Brendan Bowler of The University of Texas at Austin has probed the formation process of giant exoplanets and brown dwarfs, a class of objects that are more massive than giant planets, but not massive enough to ignite nuclear fusion in their cores to shine like true stars.

Radiation from dying stars is luminous enough to easily spin up orbiting asteroids to break-up speed

New study led by University of Warwick astronomer computes the cascade of destruction down to boulder-size fragments

Break-ups form a vast asteroid debris field much like the classic arcade game, including fragments which revolve around each other as "double asteroids"

Scientists predict that the Solar System's asteroid belt will be pulverised by the Sun's light in 6 billion years

For the first time, researchers from the Universities of Bonn and Strasbourg have simulated the formation of galaxies in a universe without dark matter. To replicate this process on the computer, they have instead modified Newton's laws of gravity. The galaxies that were created in the computer calculations are similar to those we actually see today. According to the scientists, their assumptions could solve many mysteries of modern cosmology. The results are published in the Astrophysical Journal.

Back in 1972, NASA sent their last team of astronauts to the Moon in the Apollo 17 mission. These astronauts brought some of the Moon back to Earth so scientists could continue to study lunar soil in their labs. Since we haven't returned to the Moon in almost 50 years, every lunar sample is precious. We need to make them count for researchers now and in the future. In a new study in Meteoritics & Planetary Science, scientists found a new way to analyze the chemistry of the Moon's soil using a single grain of dust.

Maunakea, Hawaii - An international team of astronomers led by scientists at the University of California, Riverside, has found an unusual monster galaxy that existed about 12 billion years ago, when the universe was only 1.8 billion years old, or 13 percent of its current age of 13.8 billion years.

Using W. M. Keck Observatory on Maunakea in Hawaii, the team found that the galaxy, dubbed XMM-2599, formed stars at a high rate and then died. Why it suddenly stopped forming stars is unclear.

The study published today in the Astrophysical Journal.

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA), in which ESO is a partner, have spotted a peculiar gas cloud that resulted from a confrontation between two stars. One star grew so large it engulfed the other which, in turn, spiralled towards its partner provoking it into shedding its outer layers.

WASHINGTON--A "beating heart" of frozen nitrogen controls Pluto's winds and may give rise to features on its surface, according to a new study.

Pluto's famous heart-shaped structure, named Tombaugh Regio, quickly became famous after NASA's New Horizons mission captured footage of the dwarf planet in 2015 and revealed it isn't the barren world scientists thought it was.

DURHAM, N.H.-- Scientists at the University of New Hampshire have unlocked one of the mysteries of how particles from flares on the sun accumulate at early stages in the energization of hazardous radiation that is harmful to astronauts, satellites and electronic equipment in space. Using data obtained by NASA's Parker Solar Probe (PSP), researchers observed one of the largest events so far during the mission.