Science ❯ Astronomy ❯ Observational Astronomy ❯ Telescopes

Data Analysis

Long-Tracked Near‑Earth Object 1998 SH2 Reclassified as Comet

Weak cometary outgassing that shifts orbits poses new uncertainty for impact forecasts.

Global Collaboration Pins Local Hubble Constant at 73.50 ± 0.81 km/s/Mpc With 1% Precision

Day-Long, Repeating Gamma-Ray Burst Outside Milky Way Defies Existing Models