Astronomy Grab Bag

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

Making Saturn's Moons with a Bang

Impacts are a favorite tool for planetary scientists to create beautiful things.

Planets and Moons Beneath the Surface

Can science peel back the surfaces of objects to see what's underneath? Can they go under the observations to find the explanations?

Titan Lake News: Throwing Caution to the Wind

Planetary scientists cautiously suggested the possible presence of an equatorial lake on Saturn's moon Titan. You wouldn't know that from the headlines.

Astronomers Wrestle with "Endless Mysteries"

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

Saturn Moons Continue to Shine

Saturn just passed opposition on April 15, making it a good viewing object from Earth this season. Amateur observers with telescopes may be able to make out the moons Titan, Rhea, Dione, Iapetus, Tethys, and Enceladus. They may look like beautiful little gems from Earth, but from the Cassini spacecraft in orbit at Saturn, they are no less than astonishing. Recent observations of these moons add to the astonishment.

Science Grab Bag

Here's a random assortment of things floating around in the science news media – some fascinating, some informative, some disgusting. We’ll let the readers decide which is which. Since it’s Friday the 13th, a day to enjoy like any other day, we’ll give you a baker’s dozen to sample.

Planetary Eruptions

Eruptions can come in two types: literal and figurative. Some planetary bodies are literally erupting. Others are causing figurative eruptions in theories. Here are some recent news stories about planets, moons, comets and other objects circling our sun and other stars. There hasn’t been much news from Mercury or Venus this month, so we’ll start on the home planet and work outward.

Wrong Again: Planetologists Embarrassed

In most careers, being wrong too often is grounds for dismissal. False prophets in ancient kingdoms were stoned or shamed out of town. Only in science, it seems, can experts consistently get it wrong, and not only keep their jobs, but be highly esteemed as experts. Among the guiltiest of the lot are planetary scientists, whose predictions have been consistently wrong for almost every planetary body studied since the dawn of the space age. Their orbital mechanics is solid; they do get their spacecraft to arrive at the right place at the right time with uncanny accuracy. But what the missions reveal is often completely different from what scientists had told the public they expected to find. This has been true of Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, comets, asteroids, and most of the moons of the solar system, where hasty revisions have had to be made after spacecraft data falsified the predictions. Here are some recent examples of “theory fail” in planetary science.

Are Saturn’s Rings Evolving?

Can ring particles grow into moons? And is that how planets grew from rings around stars?
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