hesperijska epoha

hesperijska epoha

The geologic history of Mars has been divided into three broad time periods, or Epochs. From oldest to youngest, these are Noachian, Hesperian, and Amazonian (named after places on Mars). These Epochs are defined by the number of impact craters on the ground surface; older surfaces have more craters. The Hesperian Epoch extends from about 3. 5 to about 1. 8 billion years ago. The actual timing of the Epochs is not known because we have different models of the rates of meteorite falls on Mars.

0 0

Βελτίωση

Προσθήκη εικόνας

Μέρος του λόγου: noun
Συνώνυμο(α):
Blossary:
Κλάδος/Τομέας: Αστρονομία
Category: Planetary science
Company: PSRD
Προϊόν:
Ακρώνυμο-συντόμευση:

Προσθήκη στο Γλωσσάρι μου

Άλλες γλώσσες:

Σχετικοί όροι

noahijska epoha

Αστρονομία; Planetary science

The geologic history of Mars has been divided into three broad time periods, or Epochs. From oldest to youngest, these are Noachian, Hesperian, and Amazonian (named after places ...

amazonska epoha

Αστρονομία; Planetary science

The geologic history of Mars has been divided into three broad time periods, or Epochs. From oldest to youngest, these are Noachian, Hesperian, and Amazonian (named after places ...

Ceres

Αστρονομία; Planetary science

The largest of the known asteroids; a dwarf planet. Also called 1 Ceres because it was the first asteroid to be discovered (by Piazzi in 1801).

Jarkovski efekat

Αστρονομία; Planetary science

An explanation for the shift in an asteroid's orbit around the Sun due to a thermal thrust caused by the body's uneven heating by sunlight. The illuminated side of an asteroid ...

Viking

Αστρονομία; Planetary science

U. S. Mission to Mars, composed of two spacecraft, launched in 1975. Viking 1 and Viking 2 both consisted of an orbiter and a lander. Primary mission objectives were to obtain ...

sublimacija

Αστρονομία; Planetary science

Phase transformation from solid to gas.

Misija Stardust

Αστρονομία; Planetary science

The fourth in NASA's Discovery program of low-cost spacecraft with highly focused science goals, Stardust was comprised of a spacecraft and capsule that completed a seven-year, ...

Solarna i heliosfericna observatorija

Αστρονομία; Planetary science

A project of international collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind. SOHO was launched in December, 1995. SOHO ...

Ορολογία Ειδήσεων

Featured Terms

sonjap

0
Όροι
0
Γλωσσάρια
2
Οπαδοί

Κλάδος/Τομέας: Ανθρωποι Category: Actresses

Elizabet Tejlor

A three-time Academy Awards winner, Elizabeth Taylor is an English-American film legend. Beginning as a child star, she is known for her acting talent ...