With the exponential growth of the data traffic in wireless communication systems, terahertz
(THz) frequency band is envisioned as a promising candidate to support ultra-broadband for …

Water is a fundamental molecule in the universe. On Earth, water exists in all three phases:
gas, liquid, and solid (ice). Liquid water facilitates many chemical reactions as a solvent …

Herschel was launched on 14 May 2009, and is now an operational ESA space observatory
offering unprecedented observational capabilities in the far-infrared and submillimetre …

Abstract The Cologne Database for Molecular Spectroscopy, CDMS, was founded 1998 to
provide in its catalog section line lists of mostly molecular species which are or may be …

Context. Water is a key molecule in the physics and chemistry of star and planet formation,
but it is difficult to observe from Earth. The Herschel Space Observatory provided …

Optical frequency division via optical frequency combs has enabled a leap in microwave
metrology, leading to noise performance never explored before. Extending this method to …

For decades, the source of Earth's volatiles, especially water with a deuterium-to-hydrogen
ratio (D/H) of (1.558±0.001)× 10− 4, has been a subject of debate. The similarity of Earth's …

Context. The [C ii] 158 μm line is an important tool for understanding the life cycle of
interstellar matter. Ionized carbon is present in a variety of phases of the interstellar medium …

We present the Black Hole Explorer (BHEX), a mission that will produce the sharpest images
in the history of astronomy by extending submillimeter Very-Long-Baseline Interferometry …

In diffuse interstellar clouds the chemistry that leads to the formation of the oxygen-bearing
ions OH+, H 2 O+, and H 3 O+ begins with the ionization of atomic hydrogen by cosmic rays …