Issues

The most likely explanation for a sharp drop in rotational inertia in crystalline ⁴He is the onset of superfluid behavior.

The latest additions to the periodic table are element 115 and its daughter, element 113.

Whether outraged or supportive about DOE’s planned reevaluation of cold fusion, most scientists remain deeply skeptical that it’s real.

Researchers in France have quit the administrative parts of their jobs to show the government and the public the seriousness of their concerns about the country’s research enterprise and universities.

An independent science group claims to have documented scores of cases of scientific manipulation and abuse throughout the federal government.

The administration is proposing another record-setting R&D budget that is $5.5 billion more than last year. But the entire increase would go to Pentagon weapons systems and homeland security programs.

Planets come in a wide variety of types and exhibit a wide range of complex behavior. Still, we can ask—and answer—some fundamental questions about them.

The hundreds of objects lying beyond Neptune’s orbit provide data that enable scientists to trace the history of the outer planets. They also present an intriguing mystery.

Increasingly sophisticated computer simulations show how the four solid planets could have emerged through collisions and accretion. One late, giant collision with Earth is the likely origin of the Moon.

More than a hundred extrasolar giant planets have been discovered in the past few years. To understand how they were formed, we must study in detail the giants closest to us: Jupiter and Saturn.

Mars is cold enough that its meager water content appears to exist today simply in frozen and gas phases. But as recent evidence suggests, that may not have always been the case.

From volcanic eruptions hotter than those typically found on Earth to ocean sandwiches with water trapped between ice layers, the Galileo mission revealed fascinating phenomena on Jupiter’s four largest moons.