Space
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New extremely distant solar system object found during hunt for Planet X | Scott Sheppard, Chad Trujillo and David Tholen
The orbits of the new extreme dwarf planet 2015 TG387 and its fellow Inner Oort Cloud objects 2012 VP113 and Sedna as compared with the rest of the Solar System. 2015 TG387 was nicknamed 'The ...
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Astronomers detect synchronous X-ray and radio mode switching of the pulsar PSR B0823+26 | Tomasz Nowakowski
GMRT observation at 325 MHz of PSR B0823+26 on 2017 April 20, showing as a typical example PSR B0823+26 in B mode during 2500 single-pulse sequences, or ∼ 22 minutes of the total duration of ∼ 7.5 ...
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Study finds flaw in emergent gravity | Lisa Zyga
Illustration of a three-dimensional hypersurface. Credit: Wang and Braunstein. Published in Nature Communications Aug. 10, 2018 (Phys.org) -- A new paper undermines a key assumption of the theory of ...
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NASA prepares to launch Parker Solar Probe, a mission to touch the Sun | Sarah Frazier
Parker Solar Probe will explore the corona, a region of the Sun only seen from Earth when the Moon blocks out the Sun's bright face during total solar eclipses. The corona holds the answers to many ...
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Did a rogue star change the makeup of our solar system? | Bob Yirka
Effect of a prograde, parabolic fly-by of a star with a) M=0.5 M , b) M2= 1, M and c) M2= 5 M that is inclined by 60 degrees and has an angle of periastron equal zero. The perihelion distance is ...
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Speculative wormhole echoes could revolutionize astrophysics | Pablo Bueno and Pablo A. Cano
Instant of a simulation in which two black holes merge. The collision of two rotating wormholes would trigger a similar deformation of space-time, leaving 'echoes' in the signal. Credit: LIGO ...
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How a particle may stand still in rotating spacetime | Lisa Zyga
When a particle with a certain angular momentum is located at the critical distance rst, it remains at rest while the spacetime is rotating around it. The closer a particle is to this critical ...
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Earth's orbital changes have influenced climate, life forms for at least 215 million years | Dennis V. Kent
Within ancient rocks in Arizona's Petrified Forest National Park, scientists have identified signs of a regular variation in Earth's orbit that influences climate. Here, one of the authors near the ...
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Kepler spacecraft nearing the end as fuel runs low | Charlie Sobeck
Credit: NASA March 14, 2018 (Phys.org) -- Trailing Earth's orbit at 94 million miles away, the Kepler space telescope has survived many potential knock-outs during its nine years in flight, from ...
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Scientists use NASA data to study link between solar storms and animal beachings | Lina Tran
Illustration of an Atlantic White-sided Dolphin and a Long-finned Pilot Whale, two marine mammal species that strand in Cape Cod. Credit: NASA GSFC/CIL/Brian Monroe Dec. 8, 2017 (Phys.org) -- The ...
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Physicist explores the possibility of vestiges of a universe previous to the Big Bang | Peter Moon
Physicist publishes paper in General Relativity and Gravitation proposing to eliminate need for cosmological spacetime singularity and arguing that the current expansion phase was preceded by ...
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