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Asteroids, Comets and Meteors News
December 12, 2019

Top Headlines
 

The first evidence of a giant planet orbiting a dead white dwarf star has been found in the form of a disc of gas formed from its ... read more
The search for evidence of life on Mars could be helped by fresh insights into ancient rocks ... read more

With Mars Methane Mystery Unsolved, Curiosity Serves Scientists a New One: Oxygen

For the first time in the history of space exploration, scientists have measured the seasonal changes in the gases that fill the air directly above ... read more
Astronomers using the NASA/ESA Hubble Space Telescope have observed a galaxy in the distant regions of the Universe which appears duplicated at least 12 times on the night ... read more
Latest Headlines
updated 11:20am EST

Earlier Headlines
 

First Evidence of Bio-Essential Sugars in Meteorites

A new study has discovered meteorites containing RNA sugar, ribose, and other bio-important sugars; the first direct evidence of bio-essential sugars' delivery from space to the ... read more

Exoplanet Axis Study Boosts Hopes of Complex Life, Just Not Next Door

There's new hope that we aren't alone in the universe, that advanced beings may exist on exoplanets. But they're probably not close by, says a new study on the stability of planetary ... read more

How LISA Pathfinder Detected Dozens of 'Comet Crumbs'

Scientists leveraged LISA Pathfinder's record-setting sensitivity (designed to ripples in space-time produced by, among other things, merging black holes) for a different purpose much closer to ... read more

Human Heart Cells Are Altered by Spaceflight, but Return to (Mostly) Normal on Earth

Heart muscle cells derived from stem cells show remarkable adaptability to their environment during and after spaceflight, according to a new study. The researchers examined cell-level cardiac ... read more

Views of Giant Planet in Wild Orbit Would Be Unparalleled

Contrary to previous thought, a gigantic planet in wild orbit does not preclude the presence of an Earth-like planet in the same solar system -- or life on that planet. What's more, the view ... read more

Researchers report the spacecraft Voyager 2 has reached interstellar space, following Voyager 1's historic passage six years ago. In the study, the researchers note a jump in plasma density ... read more

Worldwide Observations Confirm Nearby 'Lensing' Exoplanet

Researchers using telescopes around the world confirmed and characterized an exoplanet orbiting a nearby star through a rare phenomenon known as gravitational microlensing. The exoplanet has a mass ... read more

Astronomers using ESO's SPHERE instrument at the Very Large Telescope (VLT) have revealed that the asteroid Hygiea could be classified as a dwarf planet. The object is the fourth largest in the ... read more

Martian Landslides Not Conclusive Evidence of Ice

Giant ridges on the surface of landslides on Mars could have formed without ice, challenging their use by some as unequivocal evidence of past ice on the red planet, finds a new study using ... read more

No Defects Found in Reproductive Ability of Male Mice Returning from Short Stay in Space

Male mice raised in space using specially developed cages were returned safely to Earth. The sperm production/fertilizing ability of the mice were normal and the reproduction ability of the offspring ... read more

Making Connections: Bringing Astrophysical Processes Down to Earth

Magnetic reconnection, a process in which magnetic field lines tear and come back together, releasing large amounts of kinetic energy, occurs throughout the universe. The process gives rise to ... read more

Mars once had salt lakes that are similar to those on Earth and has gone through wet and dry ... read more

Origin and Chemical Makeup of Saturn's Moon Titan's Dunes

Astronomers exposed acetylene ice -- a chemical that is used on Earth in welding torches and exists at Titan's equatorial regions -- at low temperatures to proxies of high-energy galactic cosmic ... read more

Earth-like planets may be common in the universe, a new study implies. The team of astrophysicists and geochemists presents new evidence that the Earth is not ... read more

Hubble has given astronomers their best look yet at an interstellar visitor -- comet 2I/Borisov -- whose speed and trajectory indicate it has come from beyond our solar system. Comet 2I/Borisov is ... read more

Surveying Solar Storms by Ancient Assyrian Astronomers

Researcher finds evidence of ancient solar magnetic storms based on cuneiform astrological records and carbon-14 dating. This work may help with our understanding of intense solar activity that can ... read more

Astronomers Use Giant Galaxy Cluster as X-Ray Magnifying Lens

Astronomers have used a massive cluster of galaxies as an X-ray magnifying glass to peer back in time, to nearly 9.4 billion years ago. In the process, they spotted a tiny dwarf galaxy in its very ... read more

Ice on Lunar South Pole May Have More Than One Source

New research sheds light on the ages of ice deposits reported in the area of the Moon's south pole -- information that could help identify the sources of the deposits and help in planning future ... read more

Liquifying a Rocky Exoplanet

A hot, molten Earth would be around 5% larger than its solid counterpart. The difference between molten and solid rocky planets is important for the search of Earth-like worlds beyond our Solar ... read more

Not Long Ago, the Center of the Milky Way Exploded

A titanic, expanding beam of energy sprang from close to the supermassive black hole in the center of the Milky Way just 3.5 million years ago, sending a cone-shaped burst of radiation through both ... read more

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