Space Exploration News

Courtesy of Science Daily

Welcome to Sea and Sky's Space Exploration News. Here you can find links to the latest space news headlines about space exploration and space travel. Click on any yellow title below to view the full news article. The news article will open in a new browser window. Simply close the browser window when you are finished reading the article to return to the news article listing. You can use the "Click for More" link to go to a page with more news headlines.

 

Cassini says goodbye to a true Titan
Mere weeks away from its dramatic, mission-ending plunge into Saturn, NASA's Cassini spacecraft has a hectic schedule, orbiting the planet every week in its Grand Finale. On a few orbits, Saturn's largest moon, Titan, has been near enough to tweak Cassini's orbit, causing the spacecraft to approach Saturn a bit closer or a bit farther away. A couple of those distant passes even pushed Cassini into the inner fringes of Saturn's rings.
Publ.Date : Tue, 15 Aug 2017 15:02:05 EDT

Cosmic magnifying lens reveals inner jets of black holes
Jet material ejected from a black hole is magnified in new observations from Caltech's Owens Valley Radio Observatory. This discovery provides the best view yet of blobs of hot gas that shoot out from supermassive black holes.
Publ.Date : Tue, 15 Aug 2017 13:38:49 EDT

Tracking a solar eruption through the solar system
Ten spacecraft, from ESA's Venus Express to NASA's Voyager-2, felt the effect of a solar eruption as it washed through the solar system while three other satellites watched, providing a unique perspective on this space weather event.
Publ.Date : Tue, 15 Aug 2017 12:04:38 EDT

Tidally locked exoplanets may be more common than previously thought
Many exoplanets to be found by coming high-powered telescopes will probably be tidally locked -- with one side permanently facing their host star -- according to new research.
Publ.Date : Mon, 14 Aug 2017 16:19:52 EDT

Supernova collides with nearby star, taking astrophysicists by surprise
In the 2009 film 'Star Trek,' a supernova hurtles through space and obliterates a planet unfortunate enough to be in its path. Fiction, of course, but it turns out the notion is not so farfetched.
Publ.Date : Mon, 14 Aug 2017 13:48:14 EDT

Studying the Sun's atmosphere with the total solar eclipse of 2017
A total solar eclipse happens somewhere on Earth about once every 18 months. But because Earth's surface is mostly ocean, most eclipses are visible over land for only a short time, if at all. The total solar eclipse of Aug. 21, 2017, is different -- its path stretches over land for nearly 90 minutes, giving scientists an unprecedented opportunity to make scientific measurements from the ground.
Publ.Date : Mon, 14 Aug 2017 12:53:43 EDT

New 3-D simulations show how galactic centers cool their jets
Scientists have developed new theories and 3-D simulations to explain what's at work in the mysterious jets of energy and matter beaming from the center of galaxies at nearly the speed of light.
Publ.Date : Mon, 14 Aug 2017 12:09:22 EDT

Cassini to begin final five orbits around Saturn
NASA's Cassini spacecraft will enter new territory in its final mission phase, the Grand Finale, as it prepares to embark on a set of ultra-close passes through Saturn's upper atmosphere with its final five orbits around the planet.
Publ.Date : Sat, 12 Aug 2017 12:15:16 EDT

New mission going to the space station to explore mysteries of 'cosmic rain'
A new experiment set for launch to the International Space Station will provide an unprecedented look at a rain of particles from deep space, called cosmic rays, that constantly showers our planet. The mission is designed to measure the highest-energy particles of any detector yet flown in space.
Publ.Date : Fri, 11 Aug 2017 13:49:34 EDT

NASA watches the Sun put a stop to its own eruption
On Sept. 30, 2014, multiple NASA observatories watched a failed solar eruption. Because scientists had so many eyes on the event, they were able to explain how the Sun's magnetic landscape shredded its own eruption.
Publ.Date : Fri, 11 Aug 2017 12:48:17 EDT

Galactic winds push researchers to probe galaxies at unprecedented scale
After using the Titan supercomputer at Oak Ridge National Laboratory to rule out a potential mechanism for galactic wind, astrophysicists are aiming to generate nearly a trillion-cell simulation of an entire galaxy, which would be the largest simulation of a galaxy ever.
Publ.Date : Thu, 10 Aug 2017 17:33:41 EDT

Day to night and back again: Earth's ionosphere during the total solar eclipse
Three NASA-funded studies will use the Aug. 21 total solar eclipse as a ready-made experiment, courtesy of nature, to improve our understanding of the ionosphere and its relationship to the Sun.
Publ.Date : Thu, 10 Aug 2017 14:57:07 EDT

Why massive galaxies don't dance in crowds
Scientists have discovered why heavyweight galaxies living in a dense crowd of galaxies tend to spin more slowly than their lighter neighbors. Contrary to earlier thinking, the spin rate of the galaxy is determined by its mass, rather than how crowded its neighborhood is.
Publ.Date : Thu, 10 Aug 2017 10:49:34 EDT

New observations of Crab Nebula and Pulsar reveal polarized emissions
New observations of polarised X-rays from the Crab Nebula and Pulsar may help explain sudden flares in the Crab’s X-ray intensity, as well as provide new data for modeling – and understanding – the nebula.
Publ.Date : Thu, 10 Aug 2017 08:21:53 EDT

Lunar dynamo's lifetime extended by at least 1 billion years
Astronomers report that a lunar rock collected by NASA's Apollo 15 mission exhibits signs that it formed 1 to 2.5 billion years ago in the presence of a relatively weak magnetic field of about 5 microtesla. That's around 10 times weaker than Earth's current magnetic field but still 1,000 times larger than fields in interplanetary space today.
Publ.Date : Wed, 09 Aug 2017 14:20:39 EDT

Successful filming of fastest aurora flickering
Researchers conducted a 3 year continuous high-speed imaging observation at Poker Flat Research Range, Alaska, USA, and identified the physics behind the flickering of aurora. At the same time, they discovered faster flickerings at speeds of 1/60-1/50 and 1/80 of a second.
Publ.Date : Wed, 09 Aug 2017 14:02:30 EDT

The mystery of the pulsating blue stars
In the middle of the Chilean Atacama desert, a team of astronomers are monitoring millions of celestial bodies. In 2013, the team was surprised when they discovered, in the course of their survey, stars that pulsated much faster than expected. In the following years, the team studied these stars in more detail and concluded that they had stumbled upon a new class of variable star.
Publ.Date : Wed, 09 Aug 2017 14:02:20 EDT

RAVAN CubeSat measures Earth's outgoing energy
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
Publ.Date : Wed, 09 Aug 2017 14:01:27 EDT

New CubeSat propulsion system uses water as propellant
A new type of micropropulsion system for miniature satellites called CubeSats uses an innovative design of tiny nozzles that release precise bursts of water vapor to maneuver the spacecraft.
Publ.Date : Mon, 07 Aug 2017 16:44:44 EDT

Astronauts to bring asteroid back into lunar orbit
Future space exploration aims to fly further from Earth than ever before. New research examines the robotic phase of the Asteroid Redirect Mission (ARM). In addition to taking manned spaceflights deeper into space than ever before, the proposed mission would also bring some benefit for planetary science.
Publ.Date : Mon, 07 Aug 2017 11:03:41 EDT