WASHINGTON — Space Systems Command, the primary acquisition and space development arm of the U.S. Space Force, is moving to hire contracting and procurement specialists as it tries to recover
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Live coverage: SpaceX to launch GPS 3 satellite following switch from ULA Vulcan rocket
The GPS 3 Space Vehicle 09 satellite is encapsulated inside Falcon 9 rocket payload fairings at Astrotech Space Operations in Titusville, Florida. Image: SpaceX The U.S. Space Force is set
Magma Ocean Waves And Thermal Variability On Lava Worlds
Eigenfunctions describing tidal lava flows on a hemispherical dayside magma ocean. The nightside is masked in brown. Left half shows the scalar potential functions ϕr, computed by taking the real
Exoplanet Transit Search At The Detection Limit: Detection And False Alarm Vetting Pipeline
Earth-like and super-Earth candidates from Bryson et al. (2021) are displayed in the effective temperature–instellation flux plane, as in Bryson et al. (2021). The conservative and optimistic habitable zones defined
Geometry Shapes Life
Schematic of a zebrafish embryo at the late cleavage stage. The blastoderm is positioned at the AP atop the yolk cell at the vegetal pole (VP). The last row of
Overestimated Pressure Broadening Misleads Model Spectra in Cool M Dwarf Stars
Spectra of different stellar types. On the left, scaled and vertically shifted flux from NewEra stellar grid is shown on the y-axis and wavelength is shown in microns on the
Transit Distances And Composition Of Low-velocity Exocomets In The β Pictoris System
Spectroscopic observations of β Pic obtained on April 29, 2025. The HARPS spectrum is not flux-calibrated and was simply renormalized to a flux level similar to that of the STIS
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Even as NASA celebrated the rollout of the Space Launch System rocket and Orion spacecraft for Artemis II over the weekend, NASA’s new administrator, Jared Isaacman, made sure to put
How do blue stragglers defy the aging that turns their mates red? Blue stragglers are found in ancient star clusters, where they outshine stars the same age, looking far bluer
WASHINGTON — Blue Origin will reuse a New Glenn booster for the first time on the rocket’s next launch, carrying a satellite for AST SpaceMobile. Blue Origin announced Jan. 22
HELSINKI — China’s damaged Shenzhou-20 spacecraft returned safely to Earth after on-orbit internal repairs, concluding the country’s first human spaceflight emergency triggered by a suspected debris impact. Shenzhou-20 landed at
NASA/Keegan Barber The Space Shuttle Challenger Memorial is seen during a wreath laying ceremony that was part of NASA’s Day of Remembrance, Thursday, Jan. 22, 2026, at Arlington National Cemetery
This letter from SARA is to issue a waiver for NASA grantees attending LPSC2026, allowing them to be reimbursed out of their grants for their actual lodging, although it’s expected to
Some stars appear to defy time itself. Nestled within ancient star clusters, they shine bluer and brighter than their neighbors, looking far younger than their true age. Known as blue
Families of the astronauts lost in the space shuttle Challenger accident gathered back at the launch site Thursday to mark that tragic day 40 years ago.
A new study has examined how future human missions to Mars could access one of the planet’s most vital resources—water. The “Martian aqua: occurrence of water and appraisal of acquisition
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