Science, education, medicine - Astronomical terms. Crosswordist's Handbook

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Science, education, medicine / Astronomy, astronautics / Astronomical terms

(2)

SOUTH - the point of intersection of the mathematical horizon with the celestial meridian, closest to the South Pole of the World

(3)

BAR - stellar bars in the central part of spiral galaxies

(4)

HALO - light circles, pillars, spots observed around or near the disks of the Sun and Moon

CORE - the center of the Galaxy

(5)

APEX - the point on the celestial sphere to which the Sun moves relative to the stars

BOLID - a large and exceptionally bright meteor

WEST - the point of intersection of the mathematical horizon with the celestial equator

ZENIT - the upper point of intersection of a plumb line with the celestial sphere

NADIR - point of the celestial sphere, opposite to the zenith

NEW - star type

POLE - the point of intersection of the axis of the world with the celestial sphere

SPOT - formations on the surface of the Sun

SAROS - the period after which the sequence of solar and lunar eclipses repeats

NORTH - the point of intersection of the mathematical horizon with the celestial meridian, closest to the North Pole of the World

DAY

TORCH - formation on the Sun

(6)

AZIMUT - the angle between the meridian plane of the observation point and the vertical plane passing through this point and the observed object

APOGEE - the point of the orbit of the Moon or an artificial satellite that is farthest from the Earth

Aphelion - the point of the orbit of a celestial body revolving around it, the most distant from the Sun

EAST - the point of intersection of the mathematical horizon with the celestial equator

GIANT - type of star

STAR

ZODIAC - a collection of constellations located along the ecliptic

Dwarf - type of star

QUASAR - a space object of extremely small angular dimensions, remote from the solar system, a source of powerful radio emission

CORONA - the outer part of the star's atmosphere

SPACE

Crater - a deepening on the surface of a celestial body that occurs after the fall of another body on it

METEOR - a flash of a small celestial body that burns up in the Earth's atmosphere

ORBITA - the path of movement of a celestial body located in the gravitational field of another body

Parsec - astronomical unit of length, equal to 3,263 light years

PLASMA is an ionized gas in which the concentrations of positive and negative charges are equal

SUN - the central body of the solar system, a dwarf star

PHAETON - a hypothetical planet of the solar system, located between Mars and Jupiter and disintegrated into swarms of asteroids

(7)

ALBEDO - a value that characterizes the reflectivity of the surface

AEROLITH - an obsolete name for a stone meteorite

GLOBULES - gas and dust formations observed as dark spots against the background of light nebulae

GRADULA - formation on the Sun

COLLAPSE - catastrophically fast compression of stars

PERIGEE - the closest point to the Earth in the orbit of the Moon or an artificial satellite

PLANET

PULSAR - space sources of pulsed electromagnetic radiation

RADIANT - the point of intersection of the backward paths of meteors

REGOLIT - soil of the moon

SPICULE - individual columns of luminous plasma in the chromosphere of the Sun

Cepheid - a pulsating supergiant variable star

EQUATOR - a large circle of the celestial sphere, the plane of which is perpendicular to the axis of the world

(8)

APOCENTRE - the point in the orbit of a celestial body, the most distant from the center of the body around which the revolution takes place

ASTERISM - a group of stars in a constellation that has an independent name

ASTEROID - minor planet

VERTICAL - a large circle of the celestial sphere, passing through the zenith and nadir

HORIZON - a large circle along which the celestial sphere intersects with a plane perpendicular to the plumb line at the point of observation

ECLIPSE

MERIDIAN - a large circle of the celestial sphere, passing through the poles of the world, zenith and nadir

METEORITE - a small body falling to Earth from outer space

TELESCOPE

(9)

ANTIAPEKS - point of the celestial sphere, opposite to the apex

UNIVERSE

GALAXY - the star system to which the Sun belongs (Milky Way)

INSOLATION - irradiation of the Earth's surface with solar radiation

THE CALENDAR

PARALLAX - the apparent change in the position of the celestial body when the observer moves

PERIHELIUM - the closest point to the Sun in the orbit of a celestial body revolving around it

PERICENTER - the point of the orbit of a planet or satellite revolving around it, closest to a celestial body

PRECESSION - slow movement of the Earth's axis of rotation along a circular cone

DECLINE - the arc of the circle of declinations from the celestial equator to the luminary

CLUSTER - a collection of relatively closely spaced galaxies, connected into a single system by gravitational forces

CONSTELLATION - a section of the starry sky, allocated for ease of orientation

PHOTOSPHERE - the lower layer of the star's atmosphere

ECLIPTIC - a large circle of the celestial sphere, along which the apparent path of the Sun passes in a year

EPHEMERIS - tables of measurements of variable astronomical quantities

(10)

HELIOSPHERE - the sphere of propagation of the solar wind in space

COSMOGONY - a section of astronomy that studies the origin and development of cosmic bodies and their systems

TERMINATOR - the boundary between the illuminated and unlit parts of the planet

Nebula - an intragalactic cloud of rarefied gases and dust

SUPERNOVA - a type of star

LUMINOSITY - star radiation power

CHROMOSPHERE - the layer of a star's atmosphere

(11)

SUPERGIANT - type of star

(12)

PROTUBERANIS - a huge plasma formation of high density in the corona of the Sun

(13)

ALMUKANTARAT - a small circle of the celestial sphere, parallel to the horizon

METAGALAXY - a part of the Universe accessible to modern astronomical research methods

Equinox - the time of the year when day and night are the same length

SOLSTICE - the time of the year when the height of the sun above the horizon at noon is maximum or minimum

(14)

RADIO GALAXY - a galaxy with anomalously large radio emission

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