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Space

A meteorite thin section under a microscope. Different colors represent different minerals, because light travels through them in different ways. The round mineral aggregates are chondrules, which are a major component in primitive meteorites.

Solar System formed from “poorly mixed cake batter”

Carnegie Institution for Science

Categories Space

Asteroid Itokawa

Nukes needed to save Earth from common killer asteroid

Curtin University

Categories Space

This NASA Hubble Space Telescope image shows the distribution of dark matter in the center of the giant galaxy cluster Abell 1689, containing about 1,000 galaxies and trillions of stars. Dark matter is an invisible form of matter that accounts for most of the universe’s mass. Hubble cannot see the dark matter directly. Astronomers inferred its location by analyzing the effect of gravitational lensing, where light from galaxies behind Abell 1689 is distorted by intervening matter within the cluster. Researchers used the observed positions of 135 lensed images of 42 background galaxies to calculate the location and amount of dark matter in the cluster. They superimposed a map of these inferred dark matter concentrations, tinted blue, on an image of the cluster taken by Hubble’s Advanced Camera for Surveys. If the cluster’s gravity came only from the visible galaxies, the lensing distortions would be much weaker. The map reveals that the densest concentration of dark matter is in the cluster’s core. Abell 1689 resides 2.2 billion light-years from Earth. The image was taken in June 2002. Image credit: NASA, ESA, D. Coe (NASA Jet Propulsion Laboratory/California Institute of Technology, and Space Telescope Science Institute), N. Benitez (Institute of Astrophysics of Andalusia, Spain), T. Broadhurst (University of the Basque Country, Spain), and H. Ford (Johns Hopkins University)

A new model for dark matter

University of Michigan

Categories Physics & Mathematics, Space

Image from simulation of ice XVIII. Oxygen ions (red) occupy a regular crystal lattice, while protons (white) diffuse like a liquid

Exotic Ice Helps Explains Uranus, Neptune Magnetic Mysteries

Categories Physics & Mathematics, Space

A startling analysis from Globe at Night — a citizen science program run by NSF’s NOIRLab — concludes that stars are disappearing from human sight at an astonishing rate. The study finds that, to human eyes, artificial lighting has dulled the night sky more rapidly than indicated by satellite measurements. The study showcases the unique contributions that citizen scientists can make in essential fields of research. This graphic illustrates how the greater the amount of light pollution, and therefore skyglow, the fewer the stars that are visible.

Stars disappear before our eyes, citizen scientists report

Association of Universities for Research in Astronomy

Categories Space

Renee Abbott and Ana Diaz Artiles are looking into multisensory virtual reality technology as a tool to support the behavioral health of astronauts on long-duration missions. Texas A&M Engineering

How multisensory virtual reality can support future astronauts

Categories Space, Technology

Ryugu asteroid closeup

Ryugu asteroid shares secrets on how the solar system was formed

Categories Space

Circumpolar Laser Tests at Gemini North

SpaceX Agrees to Mitigate Impact of Starlink Satellites on Astronomy

U.S. National Science Foundation

Categories Space, Technology

Astronomers have released a gargantuan survey of the galactic plane of the Milky Way. The new dataset contains a staggering 3.32 billion celestial objects — arguably the largest such catalog so far. The data for this unprecedented survey were taken with the US Department of Energy-fabricated Dark Energy Camera at the NSF’s Cerro Tololo Inter-American Observatory in Chile, a Program of NOIRLab. The survey is here reproduced in 4000-pixels resolution to be accessible on smaller devices.

Gargantuan survey of the Milky Way reveals billions of celestial objects

U.S. National Science Foundation

Categories Space

Astronomers capture radio signal from distant galaxy

McGill University

Categories Physics & Mathematics, Space

This small laser device can help detect signs of life on other planets

Small laser device can help detect signs of life on other planets

University of Maryland

Categories Life & Non-humans, Space, Technology

Members of the public can help astronomers observe and study the night sky through NASA’s Universe of Learning Exoplanet Watch program. Credit: NASA/Bill Dunford

NASA Wants You to Help Study Planets Around Other Stars

Categories Space

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