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An Encounter With Halley's Comet
Credit: NASA/ESA/Giotto Project License: Public Domain icons -
WISE Survey Capturing the Whole Sky in Infrared Light
Credit: NASA/JPL-Caltech License: Public Domain icons -
Great Britain covered by snow
Credit: NASA image by Jeff Schmaltz, MODIS Rapid Response Team, Goddard Space Flight Center License: Public Domain icons -
Solar absorption lines
Credit: N.A. Sharp/KPNO/NOIRLab/NSO/NSF/AURA License: Creative Commons Attribution 4.0 International (CC BY 4.0) icons -
Light Dispersion by a Triangular Prism
Credit: Kelvinsong License: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication icons -
A wide-field view of Alpha Centaruri
Credit: ESO/Digitized Sky Survey 2, Acknowledgement: Davide De Martin License: Creative Commons Attribution 4.0 International (CC BY 4.0) icons -
The Wild Duck Open Cluster
Credit: NASA/JPL License: Public Domain icons -
Partial Lunar Eclipse over southern Portugal
Credit: ToryYu1989 License: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication icons -
A Coronal Mass Ejection
Credit: NASA/Goddard/SDO License: Public Domain icons -
Hubble Image of Barred Spiral Galaxy UGC 6093
Credit: ESA/Hubble & NASA License: Creative Commons Attribution 4.0 International (CC BY 4.0) icons -
The discovery of the positron
Credit: Carl D. Anderson License: Public Domain icons -
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A Geocentric chart from 1568
Credit: Bartolomeu Velho License: Public Domain icons -
Spiral Galaxy UGC 2885
Credit: NASA, ESA, Benne Holwerda (University of Louisville) License: Public Domain icons -
Conjunction of Mercury and Venus above the Moon
Credit: ESO/Y. Beletsky License: Creative Commons Attribution 4.0 International (CC BY 4.0) icons -
The Horsehead Nebula
Credit: T.A.Rector (NOIRLab/NSF/AURA) and Hubble Heritage Team (STScI/AURA/NASA) License: Creative Commons Attribution 4.0 International (CC BY 4.0) icons -
Proxima Centauri, Our Closest Stellar Neighbor
Credit: ESA/Hubble & NASA License: Creative Commons Attribution 4.0 International (CC BY 4.0) icons -
Pan-STARRS Survey: Mosaic of the Northern Sky
Credit: Richard White (STScI), Pan-STARRS1 Science Consortium License: Public Domain icons -
The LDN 483 Dark Nebula
Credit: ESO License: Creative Commons Attribution 4.0 International (CC BY 4.0) icons -
ISS' view of nightly Japan
Credit: NASA License: Public Domain icons
