Proximity articles
Which star hosts the closest known potentially life-bearing world, Proxima b?
How far away is Proxima Centauri in light-years?
What stellar classification defines Proxima Centauri?
What is the orbital period for the planet Proxima b?
What type of physical world is Proxima b suggested to be?
What major physical characteristic is highly probable for Proxima b due to its close orbit?
What energetic threat does Proxima Centauri, as a flare star, periodically unleash?
What must Proxima b possess to deflect the high-energy particles from Proxima Centauri's flares?
What is the defining requirement for liquid water in Proxima b's habitable zone location?
What is the next technological focus for definitively assessing Proxima b’s habitability?
What fundamentally defines the boundary and existence of our Solar System?
Which structure, theoretically encompassing icy bodies, extends the Sun's gravitational influence up to perhaps a light-year away?
Which specific star system is identified as the nearest known stellar neighbor to the Sun?
Which specific star holds the distinction of being the single closest known star to our Sun?
How many miles equate to one light-year based on the distance light travels in one Earth year?
What is the composition of the Alpha Centauri star system according to stellar designations?
What is the name for the phenomenon where atmospheric path length dims stars near the horizon due to scattering?
What factors primarily cause the scattering leading to Atmospheric Extinction when viewing stars near the horizon?
Why do professional telescopes benefit from being situated on mountaintop observatories regarding viewing conditions?
Traveling the distance from the Sun to Neptune, measured in light-years, equates to what fraction of the distance to the nearest star?
What is the approximate distance to the nearest star system, Alpha Centauri?
What geometric baseline is used for measuring stellar parallax?
How does the measured parallax angle relate to the distance of a star?
What limits the accuracy of parallax measurements taken by ground-based telescopes?
When a star is too distant for accurate parallax measurement, what is the primary physical principle used for distance calculation?
What is the purpose of placing a star onto a Hertzsprung-Russell (H-R) diagram during distance estimation?
What is the direct link between the pulsing behavior and true brightness of Cepheid Variable stars?
What specific characteristic makes Type Ia Supernovae excellent standard candles for mapping intergalactic space?
What assumption can a stargazer reasonably make about stars visually embedded within a nebula or star cluster?