Databases:
Due to fetching data directly from NASA servers, search may take a few minutes.
How to build queries? β–Ύ

Boolean operators

AND Results must contain terms from both sides
OR Results contain at least one of the terms
"phrase" Quotes β€” search for an exact phrase
* Wildcard β€” matches any trailing characters

Query structure

AND splits the query into groups.
Each group is a list of synonyms joined by OR.
A result must match every group.

SYNONYM_1 OR SYNONYM_2 OR … AND SYNONYM_A OR SYNONYM_B OR …

Ready-to-use example queries

Ion channels in microgravity
"ion channel*" OR "calcium channel*" OR "potassium channel*" AND "microgravity" OR "spaceflight" OR "space station"
Cosmic radiation & DNA
"DNA damage" OR "DNA repair" OR "mutation*" OR "genotoxic*" AND "cosmic radiation" OR "ionizing radiation" OR "space radiation" OR "galactic rays"
Bone & muscle loss in space
"bone loss" OR "muscle atrophy" OR "osteoporosis" OR "sarcopenia" AND "microgravity" OR "weightlessness" OR "long duration spaceflight"
Cardiovascular system
"cardiovascular" OR "cardiac" OR "heart rate" OR "blood pressure" AND "spaceflight" OR "microgravity" OR "astronaut"
Exoplanets in habitable zone
"habitable zone" OR "liquid water" OR "biosignature*" AND "exoplanet*" OR "super Earth" OR "rocky planet"
Space weather & infrastructure
"solar flare" OR "coronal mass ejection" OR "CME" OR "geomagnetic storm" AND "satellite" OR "power grid" OR "GPS" OR "infrastructure"

Tips

  • πŸ” Always use "quotes" for multi-word phrases β€” without them each word is searched independently.
  • 🌟 Wildcard * works at the end of a word: "channel*" matches channel, channels, channeling.
  • πŸ”— More synonyms in an OR group means more results β€” add variants, abbreviations, and related terms.
  • ⚑ AND narrows results to documents that satisfy all groups simultaneously.
  • πŸ“š NTRS and NASA STI support full-text search β€” title, abstract, and keywords are all indexed.