Robert C. Byrd Green Bank Telescope Archives

Distribution of hits (circles) and events (stars) over frequency and drift rate. The marker size gives the true S/N of the signal (i.e., after correcting for the factor of 3.3). The gray-shaded regions show ranges not sampled, including narrow notch filter regions at L and S bands. -- Research Notes of the AAS

Nondetection of Narrowband Radio Technosignatures from LHS 1140 b at 1–12 GHz

by Keith CowingAugust 1, 2026August 1, 2026

[Research Notes of the AAS] LHS 1140b, a rocky exoplanet in its host star’s habitable zone, was recently shown to have an escaping helium atmosphere.

Detection of a target periodic spectral signal using blipss. Left: simulated radio frequency-time data containing 64 spectral channels of width 391 kHz each. A periodic pulsed signal has been inserted into the central channel. Right: radio frequency-period (P) diagram showing the detection of a P0 = 30 s signal in the central spectral channel. The first harmonic (cross) and the first subharmonic (plus) of the fundamental signal frequency (f0 = 1/P0) are also detected at P = 15 s and P = 60 s respectively. -- astro-ph.IM

Astronomy & Telescopes, SETI & Technosignatures, Status Report

A 4-8 GHz Galactic Center Search for Periodic Technosignatures

by Keith CowingMay 31, 2023May 31, 2023

Radio searches for extraterrestrial intelligence have mainly targeted the discovery of narrowband continuous-wave beacons and artificially dispersed broadband bursts.

Astrochemistry, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report

Cyanopolyyne Chemistry In The L1544 Prestellar Core: New Insights From GBT Observations

by Keith CowingJanuary 25, 2023January 25, 2023

We report a comprehensive study of the cyanopolyyne chemistry in the prototypical prestellar core L1544.

Robert C. Byrd Green Bank Telescope

Nondetection of Narrowband Radio Technosignatures from LHS 1140 b at 1–12 GHz

A 4-8 GHz Galactic Center Search for Periodic Technosignatures

Cyanopolyyne Chemistry In The L1544 Prestellar Core: New Insights From GBT Observations

Miraflores Butte On Mars

Ocean World Exploration: 2026 American Samoa ROV + Mapping Exploration

Development Of An Adaptive Optics Testbed At MPIA For The ELT/Planetary Camera And Spectrograph (PCS)

Exploring Long-period Architectures: Four New Planet Candidates from Kepler with Periods >342 days

The Selfish Ribosome