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Astronomy & Earth's Sun

Across
Telescope that specializes in the collection of infrared wavelengths.
The star around which the Earth orbits.
Example of X-ray space telescope.
Stream of particles emitted by the Sun (2 wds).
A region on the surface of the sun that is temporarily cool and dark compared to surrounding regions.
Instrument used to collect data on, and view, distant objects.
The outer region of the Sun (2 wds).
Light emitting layer of the Sun
Perhaps the oldest science.
Precursor of the telescope.
Radio telescope array located in Chile.
Responsible for producing the first controlled nuclear fission reactor.
Down
Measured by recording two angles.
Light telescopes in Mauna Kea, Hawaii.
The outermost part of the Sun's atmosphere
Measured using a light meter device.
Played a crucial role in the development of extragalactic astronomy and a leading observational cosmologist.
Galileo used this type of telescope.
Measured using spectroscopy.
Newton developed this type of telescope.
The Sun's furnace.
Field of study focusing on decoding the nature of the universe.
Immense fusion reactor in space.
Visible light telescope designed for the precise measurements of the positions, distances, and motions of stars.
A gaseous soup of charged particles.