Science Daily: Comets and Asteroids

NASA moon data provides more accurate 2017 eclipse path

Thanks to elevation data of the moon from NASA's Lunar Reconnaissance Orbiter, or LRO, coupled with detailed NASA topography data of Earth, we have the most accurate maps of the path of totality for any eclipse to date.

Icy ridges found on Pluto

Using a model similar to what meteorologists use to forecast weather on Earth and a computer simulation of the physics of evaporating ices, a new study has found evidence that snow and ice features previously only seen on Earth, have been spotted on Pluto.

Hidden secrets of Orion's clouds

This spectacular new image is one of the largest near-infrared high-resolution mosaics of the Orion A molecular cloud, the nearest known massive star factory, lying about 1350 light-years from Earth. It reveals many young stars and other objects normally buried deep inside the dusty clouds.

Avalanche statistics suggest Tabby's star is near a continuous phase transition

In its search for extrasolar planets, the Kepler space telescope looks for stars whose light flux periodically dims, But the timing and duration of diminished light flux episodes Kepler detected coming from KIC 846852, known as Tabby's star, are a mystery. Now a team of scientists proffer an entirely novel solution to the Tabby's star puzzle.

Astronauts to get help from snake robots

Researchers are looking into how a snake robot might carry out maintenance work on the International Space Station (ISS), study comets, and explore the possibility of living and working in lava tunnels on the Moon.

Ceres: Water ice in eternal polar night

The cameras of the Dawn space probe discover water ice in Ceres' polar region. It can survive for aeons in the extreme cold traps, even though there is no atmosphere.

ALMA finds compelling evidence for pair of infant planets around young star

New ALMA observations contain compelling evidence that two newborn planets, each about the size of Saturn, are in orbit around a young star known as HD 163296. These planets, which are not yet fully formed, revealed themselves by the dual imprint they left in both the dust and the gas portions of the star's protoplanetary disk.

Antarctic site promises to open a new window on the cosmos

Antarctica might be one of the most inhospitable regions on the planet, but it is a mecca for astronomers. Its cold, dry air enables observations that can't be done elsewhere on Earth. The South Pole has hosted telescopes for decades. Now, researchers are eyeing a new location -- Dome A, which offers a unique opportunity to study the universe at little-explored terahertz radio frequencies.

Will Earth still exist 5 billion years from now?

What will happen to Earth when, in a few billion years' time, the sun is a hundred times bigger than it is today? Using the most powerful radio telescope in the world, an international team of astronomers has set out to look for answers in the star L2 Puppis. Five billion years ago, this star was very similar to the sun as it is today.

Relationships between chemicals found on comets

A new study has revealed similarities and relationships between certain types of chemicals found on 30 different comets, which vary widely in their overall composition compared to one another. The research is part of ongoing investigations into these primordial bodies, which contain material largely unchanged from the birth of the solar system some 4.6 billion years ago.