light echo
相关英语词汇推荐
- moderate-resolution spectrograph
- subdwarf B star
- MGS,Mars Global Surveyor
- NOAO,National Optical Astronomical
- focal plane spectrometer
- global positioning system
- initial planet
- plane of trajectory orbital
- bipolar planetary nebula
- dense star cluster
- starburst galaxies
- Geneva color system
- Great White Spot
- metallicity gradient
- terminal-age main sequence(TAMS)
- Flat Spectrum Radio Quasars
- standard rotational velocity star
- membership of cluster
- Hubble distance
- Compton loss