ESA’s Gaia space telescope saw our galaxy like no other spacecraft ever has. The European Space Agency’s Gaia mission made more than three trillion observations of roughly two billion stars and other objects since its launch in 2013, building the largest, most precise map of the Milky Way. The spacecraft is now nearly out of the fuel it uses to precisely point itself at its observational targets, and has ended its science mission. Pictured: An artist’s impression of the Milky Way galaxy edge-on, created using Gaia data. Image credit: ESA/Gaia/DPAC, Stefan Payne-Wardenaar.
Starship exploded after its most recent launch. SpaceX launched its Starship vehicle on Jan. 16, successfully catching the Super Heavy booster but losing the Starship second stage to an explosion. Debris rained down over the “prescribed hazard area” in the Caribbean, creating streaks of light in the sky and leaving debris in Turks and Caicos. The Federal Aviation Administration has called for a mishap investigation for the launch, as well as for last week’s New Glenn launch by Blue Origin, in which the first stage of the rocket failed to land as planned.
Budget cuts may impact Hubble’s science and mission operations. Last week, representatives of the Space Telescope Science Institute, which manages the Hubble Space Telescope’s science operations, said that proposed cuts of more than 20% to the mission’s budget could impact research and outreach as well as increase the risk to the observatory itself.
Comet ATLAS may have turned into a “headless ghost.” The nucleus of Comet ATLAS (C/2024 G3) held together as it made its closest approach to the Sun, but may have begun to disintegrate soon after. Amateur astronomer and astrophotographer Lionel Majzik captured a sequence of images from Chile showing the comet’s nucleus go from bright and condensed to diffuse. If the nucleus is breaking up, the comet’s tail will linger, continuing to move through space for some time as what some call a “headless ghost.”
Future Mars and Moon rovers may use shape memory alloy spring tires. The resilience of a rover’s wheels can be a deciding factor in its mission’s effectiveness. That’s why NASA engineers are experimenting with nickel-titanium shape memory alloys — a durable kind of material that can return to its original shape after being deformed — to construct rover wheels.