How Many Planets Could Be in the Kuiper Belt?

How Many Planets Could Be in the Kuiper Belt?

[ad_1] A recent study published in The Astrophysical Journal Letters investigates the potential existence of Mars-sized free-floating planets (FFPs)—also known as rogue planets, starless planets, and wandering planets—that could have been captured by our Sun’s gravity...
Is Pluto a planet? | Astronomy.com

Is Pluto a planet? | Astronomy.com

[ad_1] Pluto imaged with the New Horizons spacecraft during its historic 2015 flyby. Credit: NASA/JHUAPL/SWRI/Alex Parker In 1930 a young astronomer from Kansas, employed as an observer at Lowell Observatory in Arizona, discovered Pluto. It was the first planet in the...
How a Small Town in Japan Fiercely Defends its Dark Skies

How a Small Town in Japan Fiercely Defends its Dark Skies

[ad_1] Light pollution ruins dark skies. It’s a scourge that ground-based observatories have to deal with in one form or another. Scientists used a small observatory in Japan to measure what changed when a nearby town improved its lighting practices. They also noted...