Does methane flow on Titan?
Scientists are eager to prove that the river valleys and streambeds on Saturn’s largest moon carry liquid methane to its vast lakes.
When the European Space Agency’s Huygens spacecraft descended through the thick atmosphere of Saturn’s largest moon, it revealed vast lakes apparently fed by flowing rivers of liquid methane.
Searching for smart life around small stars
Researchers have set their sights on red dwarfs in hopes of making a big discovery.
Seth Shostak, the man who will know first, describes what will happen if E.T. phones Earth.
New light on our Sun’s fate
The Sun will lose 46 percent of its mass before becoming a carbon and oxygen cinder in 6.5 billion years. Here’s how astronomers know its destiny.
A star similar to the Sun will end its life as a planetary nebula surrounding a white dwarf.
Comet ISON’s opening act
The most anticipated comet in decades got off to a good start.
Where other astrophotographers fear to tread
Thomas V. Davis is committed to shedding light on the dusty, dark parts of the universe through his portraits of nebulae.
Thomas V. Davis has made a project of capturing the objects in the van den Bergh catalog.
What are we learning from cosmic dust?
Tiny particles in the solar system may answer some of its biggest questions.
The Ra R110 ED Doublet OTA offers high-quality optics, good portability, and nice styling — all at a great price.
Explore the Trumpler classes of clusters
Since 1930, astronomers have divided the thousands of open clusters into 36 types. Find out what makes them different.
Roam through the various classifications of these easy-to-observe objects.