Sentences with phrase «then terrestrial planets»

In 1980, Andy led the Minor Planet Group as part of the then Terrestrial Planets Section before in 1984 becoming the founding director of the Minor Planets Section, later to become the Asteroids and Remote Planets Section.

If finding life on other planets is really NASA's most important goal, then the Terrestrial Planet Finder is the big enchilada of the entire spaced - based telescope effort.

If they can, then the Terrestrial Planet Finder will look very different from what NASA envisioned only a few years ago.

Not exact matches

Terrestrial planet formation models indicate Earth went through a sequence of major growth phases: accretion of planetesimals and planetary embryos over many tens of millions of years; a giant impact that led to the formation of our Moon; and then the late bombardment, when giant asteroids, dwarfing the one that presumably killed the dinosaurs, periodically hit ancient Earth.

If CO2 levels on planet Earth also lag the cooling periods, then how can it be that CO2 levels are causally related to terrestrial heating periods at all?