The sun was heading into a long slumber, but started waking up in 2018, with high solar activity and fluctuating cycles that ...

NASA’s IMAP mission, led by Princeton University’s David McComas, will study the heliosphere — the invisible electromagnetic ...

Earth will move between Saturn and the sun this weekend, offering prime views of Saturn in what's known as "opposition." Here's what to know.

By capturing the same thing from very different perspectives, a NASA astronaut and an intrepid photographer create a whole ...

Scientists believe they have discovered evidence of a hidden planet existing beyond Neptune, which they have named 'Planet Y'. Recently, a study analyzing the orbits of Kuiper Belt objects indicated ...

The Kuiper Belt is loosely defined as a doughnut-shaped swath of space beginning just beyond the orbit of Neptune and ...

The final eclipse of 2025 will unfold this weekend, but despite some of the hype online, most of the world will miss the ...

"This is four times more people than saw Neil Armstrong walk on the moon. Think about what a world event this is going to be." ...

Three celestial bodies are about to meet up for one night in September in a conjunction that should be widely visible in the ...

Three celestial bodies will meet up for one night in September in a cosmic conjunction that should be widely visible in the ...

Later, it was reclassified as a dwarf planet, yet its mysterious charm has not diminished at all. Why is that? Because Pluto's complex and elusive terrain is like a mysterious key that may hold the ...

The sun has become increasingly active since 2008, a new NASA study shows. Solar activity is known to fluctuate in cycles of ...