Sandia National Laboratories’ Guillaume Loisel poses with Sandia’s Z machine, where hands-on experiments contradicted a long-standing assumption about the X-ray spectra from the vicinity of black holes in space. Loisel is the lead author of a paper on the experimental results, published in Physical Review Letters. Credit: Randy Montoya, Sandia National Laboratories A long-standing but

The difference in the magnitudes of supernovae in the ?CDM and Timescape cosmologies and the magnitudes the supernovae would appear to have in an empty universe (horizontal dashed line). Both models show recent apparent acceleration following earlier deceleration. In the Timescape model this is not a real effect, however, and the curve is flatter than

An artists impression of GJ 436b can be seen in the background in this image. Credit: NASA/JPL-Caltech Astronomers from the University of Geneva (UNIGE), Switzerland, also members of the PlanetS National Centre of Competence in Research, have been working on a joint project with the universities of Berne, Warwick, Grenoble Alpes and the Paris Institute

AR Scorpii consists of a rapidly spinning, magnetized white dwarf star that mysteriously interacts with its companion star. Credit: M. Garlick/University of Warwick, ESA/Hubble Astronomers studying the unique binary star system AR Scorpii have discovered the brightness of the system has changed over the past decade. The new evidence lends support to an existing theory

Submillimeter waves detected with ALMA are shown in the left, indicating the location of dense dust and gas where stars are being formed. Optical and infrared light seen with the Hubble Space Telescope are shown in the middle and right, respectively. A large galactic disk is seen in infrared, while three young star clusters are

Composite image of the X-ray pulsar SXP 1062 surrounded by the supernova remnant. The false-color image combines X-ray (blue) and optical data (oxygen: green, hydrogen: red). Credit: ESA / XMM-Newton / L. Oskinova, University of Potsdam, Germany / M. Guerrero, Instituto de Astrofisica de Andalucia, Spain (X-ray); Cerro Tololo Inter-American Observatory / R. Gruendl &

The Low-Frequency Array (LOFAR), a network of thousands of linked radio antennas, primarily located in the Netherlands, has discovered two new millisecond pulsars by investigating previously unknown gamma-ray sources uncovered by NASA’s Fermi Gamma-ray Space Telescope. Pulsar J0952-0607, highlighted near center right, rotates 707 times a second and now ranks as second-fastest pulsar known. The

A selfie of the NASA Curiosity rover at the Murray Buttes in Gale Crater, Mars, a location where boron was found in light-toned calcium sulfate veins. Credit: NASA/JPL-Caltech/MSSS The discovery of boron on Mars gives scientists more clues about whether life could have ever existed on the planet, according to a paper published in the

An illustration of Akatsuki successfully tracking lower-altitude clouds during the night with its near-infrared camera IR2. Credit: Copyrighted image; PLANET-C Project Team Observations by Japan’s Venus climate orbiter Akatsuki have revealed an equatorial jet in the lower to middle cloud layer of the planet’s atmosphere, a finding that could be pivotal to unraveling a phenomenon

This artist’s impression shows the view from the surface of one of the planets in the TRAPPIST-1 system. At least seven planets orbit this ultracool dwarf star 40 light-years from Earth and they are all roughly the same size as the Earth. Several of the planets are at the right distances from their star for

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