Results 251 to 260 of about 195,466 (294)

Planetary Nebulae

Astrophysics and Space Science, 1996
This review summarizes spectroscopic and imaging results obtained on board the Infrared Space Observatory (ISO) on well-known planetary nebulae: the young nebula NGC 7027, and two fully evolved nearby nebulae, the Dumbbell and the Helix.
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CO in Planetary Nebulae and Proto-Planetary Nebulae

1997
The evolution between the asymptotic giant branch (AGB) and the planetary nebula (PN) phases has long been a “missing link” in our understanding of stellar evolution. Through the study of cool IRAS sources, an increasing number of transition objects, or “proto-planetary nebulae”, has now been identified.
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Molecules and solids in planetary nebulae and proto-planetary nebulae

Advances in Space Research, 2007
Abstract Recent millimeter-wave and infrared spectroscopic observations have identified a large number of organic molecules through their rotational and vibrational transitions. In particular, the detections of the stretching and bending modes of aliphatic and aromatic compounds have revealed a continuous synthesis of organic materials at the late ...
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Risk assessment of microplastic particles

Nature Reviews Materials, 2022
Albert A Koelmans, Paula Redondo Hasselerharm, Nur Hazimah Mohamed Nor   +2 more
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Planetary Nebulae

Nature, 1980
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Planetary Nebulae

Space Science Reviews, 1977
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A planetary boundary for green water

Nature Reviews Earth & Environment, 2022
Lan Wang-Erlandsson, Arne Tobian, Ruud J Van Der Ent   +2 more
exaly  

From planetary to regional boundaries for agricultural nitrogen pollution

Nature, 2022
Lena F Schulte-Uebbing, Arthur Beusen, Alexander F Bouwman   +2 more
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Life-cycle assessment to guide solutions for the triple planetary crisis

Nature Reviews Earth & Environment, 2023
Stefanie Hellweg, Enrico Benetto, Francesca Verones   +2 more
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Tara Oceans: towards global ocean ecosystems biology

Nature Reviews Microbiology, 2020
Shinichi Sunagawa, Silvia G Acinas, Peer Bork   +2 more
exaly