a group of stars that forms a shape in the sky and has a name
The Little Bear constellation is still used by navigators at sea.
tähtikuvio
extraterrestrial
(in stories) a creature that comes from another planet; a creature that may exist on another planet
The movie was about Jupiters extraterrestials.
avaruusolento: muukalainen
hyperspace
space that consists of more than three dimensions
An individual could survive in an escape pod ejected in hyperspace, but if the pod lacked a hyperdrive of its own, reversion to realspace would be impossible.
hyperavaruus
wormhole
a possible connection between regions of space time that are far apart
If scientists could somehow construct a wormhole, initially the two ends would be synchronized in time.
madonreikä
zodiac
the imaginary area in the sky in which the sun, moon and planets appear to lie, and which has been divided into twelve equal parts, each with a special name and symbol
What's your zodiac sign?
horoskooppi
astrophysics
the scientific study of the physical and chemical structure of the stars, planets, etc.
Astrophysics creates physical theories of small to medium-size structures in the universe.
astrofysiikka
nebula
a mass of dust or gas that can be seen in the night sky, often appearing very bright; a bright area in the night sky caused by a large cloud of stars that are far away
a nebula is formed when portions of the interstellar medium undergo gravitational collapse.
tähtisumu
Martian
an imaginary creature from the planet Mars
Are the Martians really green creatures?
marsilainen
falling star
a small meteor (= a piece of rock in outer space) that travels very fast and burns with a bright light as it enters the earth’s atmosphere
Did you see the falling star yesterday?
tähdenlento
exoplanet
a planet outside the solar system
The new data will help scientists find earth-like exoplanets.
the shadow made by the earth or the moon during a partial eclipse
puolivarjo
ray
a narrow line of light, heat or other energy
The windows were shining in the reflected rays of the setting sun.
valon säde
sunbeam
a stream of light from the sun
The sunbeam is warming the ground
auringonsäde
wane
(of the moon)to appear slightly smaller each day after being round and full
The Moon ‘wanes’ during the phase between the Full Moon and the next New Moon.
vähetä
twilight
the small amount of light or the period of time at the end of the day after the sun has gone down
Twilight is the period between sunset and dusk.
iltahämärä
zenith
the highest point that the sun or moon reaches in the sky, directly above you
Zenith is always 90 degrees from the horizon.
lakipiste
sunup
the time when the sun rises and day begins
I always wake up early to see the sunup.
auringonnousu
solar year
the time it takes the earth to go around the sun once, approximately 365¼ days
The Egyptians appear to have been the first to develop a solar calendar
aurinkovuosi
corona
a ring of light seen around the sun or moon, especially during an eclipse
The corona is usually hidden by the bright light of the Sun's surface.
korona; valokruunu
eclipse
an occasion when the moon passes between the earth and the sun so that you cannot see all or part of the sun for a time; an occasion when the earth passes between the moon and the sun so that you cannot see all or part of the moon for a time
There are between 2 and 5 solar eclipses every year.
