Planetary alignment happening in February: Planets make 'string' across California skies
Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in February.
Astronomers announce largest collection of comets found outside our solar system
For the first time, astronomers have imaged dozens of belts around nearby stars where comets and tiny pebbles within them are ...
Why Is Pluto Not A Planet?
Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.
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Why Is Pluto No Longer a Planet?
Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't achieved gravitational dominance in its region, the International Astronomical ...
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The Mystery of Arrokoth: What NASA Didn’t See Coming
NASA’s New Horizons mission changed our understanding of the outer solar system. After its famous Pluto flyby, it traveled ...