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Space Exploration News

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astrophysics, cosmology, the universe...

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The mouth of the beast

Like the gaping mouth of a gigantic celestial creature, the cometary globule CG4 glows menacingly in this new image from ESO's Very Large Telescope. Although it appears to be big and bright in this picture, this is actually a faint nebula, which makes it very hard for amateur astronomers to spot. The exact nature of CG4 remains a mystery.

Posted: Jan 28th, 2015

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Gigantic ring system around J1407b much larger, heavier than Saturn's

Astronomers have discovered that the ring system that they see eclipse the very young Sun-like star J1407 is of enormous proportions, much larger and heavier than the ring system of Saturn. The ring system - the first of its kind to be found outside our solar system - was discovered in 2012.

Posted: Jan 26th, 2015

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Swarm of microprobes to head for Jupiter

A swarm of tiny probes each with a different sensor could be fired into the clouds of Jupiter and grab data as they fall before burning up in the gas giant planet's atmosphere. The probes would last an estimated 15 minutes.

Posted: Jan 26th, 2015

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Yes, black holes exist in gravitational theories with unbounded speeds of propagation

Gravitational theories with broken Lorentz invariance have attracted a great deal of interest as they provide a test-bed of LI and offer a mechanism to improve their ultraviolet behavior, so that the theories may be renormalizable. However in such theories, particles can travel with arbitrary velocities and black holes may not exist at all. In contrast to this expectation, it has been shown that an absolute horizon exists, which traps signals despite infinitely large velocities.

Posted: Jan 23rd, 2015

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Watching the birth of a comet magnetosphere

The RPC-ICA instrument onboard the Rosetta spacecraft has been watching the early stages of how a magnetosphere forms around Comet 67P Churyumov-Gerasimenko as it moves closer to the Sun along its orbit and begins to interact with the solar wind.

Posted: Jan 22nd, 2015

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Black hole on a diet creates a 'changing look' quasar

Astronomers have identified the first 'changing look' quasar, a gleaming object in deep space that appears to have its own dimmer switch. The discovery may offer a glimpse into the life story of the universe's great beacons.

Posted: Jan 22nd, 2015

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Inside the big wormhole (w/video)

Based on the latest evidence and theories our galaxy could be a huge wormhole (or space-time tunnel) and, if that were true, it would be 'stable and navigable'. This is the hypothesis put forward in a new study.

Posted: Jan 21st, 2015

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Dawn - heading for icy Ceres

Planetary scientists may find a thick ice crust with an ocean underneath when the NASA Dawn spacecraft arrives at Ceres in March 2015.

Posted: Jan 20th, 2015

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