Distribution of hits (circles) and events (stars) over frequency and drift rate. The marker size gives the S/N. The gray-shaded regions show ranges not sampled, including narrow notch filter regions
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Surviving rapid inward orbital migration is a crucial aspect of formation models for the Jupiter’s Galilean moons. (Source) The primary aim of this study is to investigate the orbital migration
H–R diagrams for the binary systems HD 130669, HD 184467, HD 191854, and HD 214222. The positions of the individual stellar components (A and B) are plotted with their respective
HELSINKI — China is aiming for a first launch of a reusable, cargo-optimized variant of its new crew launch vehicle in the first half of the year, according to official
HELSINKI — China reached 92 orbital launches in 2025 with back-to-back missions this week, capping a record year for both the country and the global space sector. The launches see
TAMPA, Fla. — Space Forge said Dec. 31 it generated plasma aboard its first satellite, a milestone the British startup says shows it can create and maintain conditions needed to
In an age where adventure and exploration are just a pocket away, finding the right gear can make all the difference. Enter the compact handheld monocular telescope, a game-changer for
Explore This Section Earth Earth Observer Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam Announcements More Archives Conference Schedules Style Guide 2 min read
Explore This Section Earth Earth Observer Editor’s Corner Feature Articles Meeting Summaries News Science in the News Calendars In Memoriam Announcements More Archives Conference Schedules Style Guide 2 min read
WASHINGTON — Planet, a company best known for providing geospatial intelligence through its constellation of imaging satellites, sees a significant opportunity in developing orbital data centers for artificial intelligence. Planet
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