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- South, James James South: A Stellar Journey from Southwark to the Stars James South (1785-1… Astronomers
- South Polar Distance South Polar Distance: A Celestial Compass for the Southern Sky In the vast exp… Stellar Astronomy
- Specific Gravity Unveiling the Stellar Secrets: Specific Gravity in Astronomy While the term "s… Stellar Astronomy
- Spectrum Analysis Unveiling the Stars: Spectrum Analysis in Stellar Astronomy The vast expanse o… Stellar Astronomy
- Speculum The Heart of a Telescope: Exploring the Speculum The vastness of the cosmos, t… Astronomical Instrumentation
- Sphere Spheres in Stellar Astronomy: A Universe of Shapes In the vast expanse of the … Stellar Astronomy
- Spheroid The Shape of Stars: Exploring the Spheroid in Stellar Astronomy Stars, those c… Stellar Astronomy
- Spica Spica: The Jewel of Virgo Spica, the brightest star in the constellation Virgo… Stellar Astronomy
- Spitzer, Lyman Lyman Spitzer: A Pioneer in Stellar Evolution and Space Exploration Lyman Spit… Astronomers
- Sporer, Friedrich Wilhelm Gustav Friedrich Wilhelm Gustav Sporer: The Sunspot Detective Friedrich Wilhelm Gusta… Astronomers
- Spots on Sun Sunspots: Dark Secrets of a Stellar Giant The Sun, our celestial neighbor, mig… Stellar Astronomy
- Spring Tides Riding the Waves: Understanding Spring Tides in Stellar Astronomy The ocean's … Stellar Astronomy
- Stars Unveiling the Cosmic Jewels: Stars in Stellar Astronomy The night sky, a vast … Stellar Astronomy
- Stars, Binary Dancing in the Dark: The Fascinating World of Binary Stars The night sky, a ta… Stellar Astronomy
- Stars, Double The Dance of Two: Unraveling the Secrets of Double Stars In the vast tapestry … Stellar Astronomy
- Stars, Variable The Flickering Jewels of the Cosmos: Variable Stars in Stellar Astronomy The n… Stellar Astronomy
- Stationary Points When Planets Seem to Stand Still: Understanding Stationary Points in Stellar As… Stellar Astronomy
- Steavenson, William Herbert William Herbert Steavenson: The Amateur Astronomer Who Shaped the Profession W… Astronomers
- Stereograms Unveiling the Moon's 3D Form: Stereograms in Stellar Astronomy The moon, our c… Stellar Astronomy
- Stereographic Projection Mapping the Cosmos: A Look at Stereographic Projection in Stellar Astronomy L… Stellar Astronomy
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