NASA's Goddard Space Flight Center 26 Apr 2019, 11:42 UTC This sparkling burst of stars is Messier 75. It is a globular cluster: a spherical collection of stars bound together by gravity. Clusters like this orbit around galaxies and typically reside in their outer and less-crowded areas, gathering to form dense communities in the galactic suburbs.
NASA's Jet Propulsion Laboratory News and Features 25 Apr 2019, 16:49 UTC On April 10, 2019, the Event Horizon Telescope (EHT) unveiled the first-ever image of a black hole's event horizon, the area beyond which light cannot escape the immense gravity of the black hole. That giant black hole, with a mass of 6.5 billion Suns, is located in the elliptical galaxy Messier 87 (M87). EHT is an international collaboration whose support in the U.S. includes the National Science Foundation. This image from NASA's Spitzer Space Telescope shows the entire M87 galaxy in infrared light. The EHT image, by contrast, relied on light in radio wavelengths and showed the black hole's shadow against the backdrop of high-energy material around it.
Hubble Space Telescope News
Science Release: Latest Hubble Measurements Suggest Disparity in Hubble Constant Calculations is not a Fluke25 Apr 2019, 14:00 UTC
NASA's Goddard Space Flight Center 25 Apr 2019, 13:46 UTC Much has changed technologically since NASA’s Galileo mission dropped a probe into Jupiter’s atmosphere to investigate, among other things, the heat engine driving the gas giant’s atmospheric circulation. A NASA scientist and his team at the Goddard Space Flight Center in Greenbelt, Maryland, are taking advantage of those advances to mature a smaller, more capable net flux radiometer. This type of instrument tells scientists where heating and cooling occurs in a planet’s atmosphere and defines the roles of solar and internal heat sources that contribute to atmospheric motions. The next-generation radiometer is specifically being developed to study the atmospheres of Uranus or Neptune, but could be used on any target with an atmosphere.
NASA Breaking News 23 Apr 2019, 18:37 UTC NASA’s Mars InSight lander has measured and recorded for the first time ever a likely “marsquake.”
Canada-France-Hawaii Telescope 23 Apr 2019, 08:31 UTC A team of researchers from the Strasbourg Astronomical Observatory, Bologna Observatory and the University of Stockholm has identified a stream of stars that was torn off the globular cluster Omega Centauri. Searching through the 1.7 billion stars observed by the ESA Gaia mission, they have identified 309 stars that suggest that this globular cluster may actually be the remnant of a dwarf galaxy that is being torn apart by the gravitational forces of our Galaxy.
NASA's Goddard Space Flight Center
NASA Scientist to Discuss “Apollo at 50: The Lasting Effect of Exploration of the Lunar Surface” at Library of Congress Lecture22 Apr 2019, 13:50 UTC The public is invited to a free talk called ‘Apollo at 50: The Lasting Effect of Exploration of the Lunar Surface on Our Current Exploration of the Moon,' with Dr. Noah Petro, Project Scientist for the Lunar Reconnaissance Orbiter or LRO mission. The talk will occur in the Pickford theater, third floor, Madison Building, 101 Independence Avenue SE, Library of Congress, Washington, D.C., on Tuesday, April 30 from 11:30 a.m. to 12:30 p.m. EDT.
Hubble Space Telescope News 18 Apr 2019, 14:00 UTC