The New Horizons flyby of Kuiper Belt object 2014 MU69 - a year from today, on January 1, 2019 - will be the most distant in the history of space exploration.
This was the most popular post at EarthSky this week, and no wonder. It's exciting! Scientists expect the 1st-ever direct image of a black hole's event horizon, soon.
You’ve probably read about this unprecedented visitor from interstellar space. Astronomer Guy Ottewell thought you’d like to see its trajectory through our solar system.
Astronomers knew this star was "winking," or dimming erratically. They thought it might be young. Now they think RZ Piscium might be more evolved than our sun, and hungry.
For the 1st time, astronomers have seen giant bubbles roiling up to the surface of a star beyond our solar system. Each great bubble is so huge it would extend from our sun to Venus.