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Solar System

Space

Clues to hazy exoplanet complexity revealed in our own solar system

Data collected from observations recorded by NASA's Cassini mission has been used to propose ways to better understand the atmospheres of exoplanets. By studying the light of sunsets on Saturn’s satellite, Titan, scientists have shown how spectra are subtly altered when passing through a hazy atmosphere, thereby giving a greater insight into interpreting the spectral readings of the atmosphere of these distant worlds.Read More

Space

NASA orbiter discovers new Martian crater

There are millions of impact craters all over the Solar System, but direct evidence of the massive collisions that form them is very hard to come by – and therefore very valuable. While carrying out its routine monitoring of the weather on the Red Planet, the Mars Color Imager (MARCI) on NASA’s Mars Reconnaissance Orbiter (MRO) has inadvertently snapped before and after images of the largest fresh meteor impact crater found anywhere in the Solar System.Read More

Space

Rosetta spacecraft captures comet's developing coma

On its way to rendezvous with comet 67P/Churyumov-Gerasimenko (67P, for short), the European Space Agency's (ESA's) Rosetta spacecraft has spied its approaching target and the coma – the "halo" made primarily out of ice and dust that gives the comet its fuzzy appearance – that is developing around its nucleus. At more than 600 million km (373 million miles) from the Sun, the opportunity to observe the early onset of coma production at such distances promises to add much to our knowledge of the life-cycle of a comet as it wends its way around the solar system. Read More

Space

Sun's "sibling" could help us understand how life got started

Researchers at the University of Texas have identified a star that formed in the same star cluster as our Sun. Dubbed HD 162826, the star is 15 percent more massive than the Sun and resides 110 light-years away. It's hoped the discovery of this "sibling" will help us understand more about where and how the solar system originated, and might also point us to the best candidates for finding extraterrestrial life.Read More

Space

Not enough hours in the day? At least you're not on planet Beta Pictoris b

According to NASA, 1,703 planets orbiting 1,033 stars have been found so far, but very little is known about these planets beyond some deductions based on their orbits. That veil is lifting though, as demonstrated by Dutch astronomers who have for the first time measured the length of an exoplanet’s day. Using the European Southern Observatory’s Very Large Telescope (VLT) in Chile’s Atacama desert, the team has learned that the young extrasolar gas giant Beta Pictoris b has an eight-hour day and spins faster than any planet in the Solar System.Read More

Space

Ganymede may be "club sandwich" moon

In a combination of the astronomical and the culinary, scientists at NASA’s Jet Propulsion Laboratory (JPL) say that Jupiter’s largest moon, Ganymede, may not have a single large ocean, but instead may be built like a club sandwich with alternating layers of ice and water. The claim is based on computer models of how salt water acts under the high pressures that may exist beneath Ganymede’s global ice pack, and may improve the chances of finding life elsewhere in the Solar System. Read More

Space

Alpha Centauri B may have "superhabitable" worlds

Since Earth is the only known inhabited planet and we happen to live here, it’s only natural to regard it as the ideal place for life to exist, and to assume that another life-bearing planet would be fairly similar. However, that is not the opinion of scientists René Heller and John Armstrong who contend that there might be a planet even more suitable for life than Earth 4.3 light years away orbiting the star Alpha Centauri B. Read More

Space

Is Ceres an oasis between Mars and Jupiter?

In mid-2015, the asteroid probe Dawn is scheduled to establish orbit around Ceres, the only dwarf planet in the inner Solar System, as well as the largest asteroid, to begin roughly six months of close-up observation. The level of interest in this mission has significantly increased with the detection by the ESA's Herschel space observatory of plumes of water vapor being exuded from Ceres' surface from a pair of local sources.Read More

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