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Dark Matter Remains Missing

How long do astronomers get to search for something that has no direct evidence?

Bizarre Bursts in Space

Astronomers don't know what they are, or where they come from, but big blasts from space have opened up a new field of research.

Christmas Star Remains Mysterious, But Something Real Happened

Theories rise and fall about the nature of the star that led the wise men to Bethlehem, but the fact remains: they saw something, and came on time to see Jesus.

Wishing Upon Star Formation

Many astronomy articles have a bad habit of assuming star formation without demonstrating or explaining it.

Radiation, Mistakes, and Assumptions

Three news items about atomic radiation should cause us to beware of academic overstatement.

Rearranging Deck Chairs on Sinking Planet Theories

Supernovas come in handy as theory rescue devices.

Cosmologists Need New Physics

More new observations don't fit current cosmological theory.

Astronomers Deal With Outrageous Phenomena

Even for scientists accustomed to big things, some observations seem too outrageous to explain.

Small Thing Make Big Boom

The most spectacular supernova ever detected has astrophysicists scratching their heads for a mechanism.

Major Scientific Revolutions Are Still Possible

Beware the myth of progress. There's more scientists don't know than what they know.

Entropy in Space Seen at All Scales

Entropy at all scales: clearly seen. Creation of order: not so much.

SETI Club Goes Bonkers

Flush with new money, the astronomers who support SETI have lost all restraint in their speculations.

Natural Light Shows Dazzle Scientists

Here are some news stories from diverse fields of science, related only by the phenomenon of light.

Astronomers Lie about Star Formation

A look at the evidence behind the latest claim of the universe's earliest stars shows nothing of the sort. And that's not the biggest whopper.

Cosmic Ruler Flawed

Type 1a supernovae, vital to estimates of the size and expansion of the universe, are not uniform. This has cosmic implications.

Double Trouble for Cosmology

Two developments are converging to threaten the standard big bang model of the universe's origin.

Blow to Supernova Nucleogenesis Theory

There's 100 times less of a radioactive element on the ocean floor than expected.

Of Stars and Significance

The farther out we look, the more questions we have. But does secular astronomy ask the right questions?

Of Molecules and Men

Atoms and molecules are tiny but can have a big influence on the habitability of planets and astrobiologists' theories about them.

Light Speed Implications Are Staggering

A new paper revises the speed of light. This could change everything in the universe.

Major Cosmic Questions Remain Unanswered

Some basic ideas about physics and astronomy remain so mysterious, and their explanations so flexible, they may lead some to question whether they should be called "hard sciences."

Astronomy Grab Bag

For year's end, here's a clean-out of astronomy articles—from planetary science to cosmology—to motivate further inquiry.

Supernova Dating and Classification Is Not Simple

Bang! goes a star. Watch how fast its contents move, and you know the date, right? Watch its light curve, and you know the type, right?

Sun, Moon and Stars in the News

What's up in astronomy? Surprises, by heavens.

Astronomers Wrestle with "Endless Mysteries"

Some of the biggest questions in the universe remain completely baffling to astronomers, a leading journal admitted.

Observations Upset Models of Stellar Evolution

Stellar evolution models go back decades. Ever since the Hertzsprung-Russell diagram came out in 1910 (graphing temperature against luminosity), showing most stars fell on a line called the “main sequence”, astrophysicists have sought to understand the life cycle of stars from birth to death. In general, the story goes, collapsing clouds of gas and dust produce main-sequence stars that burn nuclear fuel till they run out. Depending on their masses, they end up as supernovae, red giants or slowly-cooling cinders. While red dwarfs cool down slowly into the darkness, supernovae and red giants eject mass outward into space . Two new planets found close to a red giant are among new headaches for theorists.