Science Daily: Comets and Asteroids

Probing seven worlds with NASA's James Webb Space Telescope

With the discovery of seven earth-sized planets around the TRAPPIST-1 star 40 light years away, astronomers are looking to the upcoming James Webb Space Telescope to help us find out if any of these planets could possibly support life.

First solar images from NOAA's GOES-16 satellite

The first images from the Solar Ultraviolet Imager or SUVI instrument aboard NOAA's GOES-16 satellite have been successful, capturing a large coronal hole on Jan. 29, 2017.

The heat is on

NASA is developing a new family of flexible heat-shield systems with a woven carbon-fiber base material, and is using X-rays to test the designs.

Cells adapt ultra-rapidly to zero gravity

Mammalian cells fully adapt to zero gravity in less than a minute. Real-time readings on the International Space Station (ISS) reveal that cells compensate ultra-rapidly for changes in gravitational conditions, an international team of scientists has found.

Preserving vision for astronauts

As NASA prepares for its journey to Mars, one researcher is investigating why so many astronauts suffer from poorer vision after they return to Earth.

Volcanic hydrogen spurs chances of finding exoplanet life

Hunting for habitable exoplanets now may be easier: astronomers report that hydrogen pouring from volcanic sources on planets throughout the universe could improve the chances of locating life in the cosmos.

Cosmic blast from the past

Three decades ago, a massive stellar explosion sent shockwaves not only through space but also through the astronomical community. SN 1987A was the closest observed supernova to Earth since the invention of the telescope and has become by far the best studied of all time, revolutionizing our understanding of the explosive death of massive stars.

Official naming of surface features on Pluto and its satellites: First step approved

The New Horizons flyby of Pluto and its satellites returned a scientific treasure trove of information about these distant and surprisingly complex worlds, showing a vast nitrogen glacier as well as ice mountains, canyons, cliffs, craters and more. Now the categories for official names have been approved and the name proposals can be submitted by the New Horizons team.

Surprising dunes on comet Chury

Surprising images from the Rosetta spacecraft show the presence of dune-like patterns on the surface of comet Chury. Researchers have studied the available images and modeled the outgassing of vapor to try to explain the phenomenon. They show that the strong pressure difference between the sunlit side of the comet and that in shadow generates winds able to transport grains and form dunes.

Experiments call origin of Earth's iron into question

New research reveals that the Earth's unique iron composition isn't linked to the formation of the planet's core, calling into question a prevailing theory about the events that shaped our planet during its earliest years.

Origin of spooky meteor noises reappraised

Sound travels more slowly than light. Then why do sounds of meteors entering Earth's atmosphere precede or accompany the sight of them? Researchers believe they have an answer.

Why are there different 'flavors' of iron around the Solar System?

New work shows that interactions between iron and nickel under the extreme pressures and temperatures similar to a planetary interior can help scientists understand the period in our Solar System's youth when planets were forming and their cores were created.

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