background preloader


Facebook Twitter

Jupiter: Juno Perijove 06. Spacex NROL-76 Launch Webcast. Name that Space Rock. 184623-The-Planets-If-They-Were-As-Far-Away-From-Earth-As-The-Moon. Rocket seen from plane. 4th Dimension - Tesseract, 4th Dimension Made Easy - Carl Sagan. Soyuz capsule docking with the ISS. Space Engine - Home page. 12 hours on Earth as seen from geostationary orbit. The Incredible Shrinking Mercury is Active After All. The planet Mercury is being pelted regularly by bits of dust from an ancient comet, a new study has concluded.

The Incredible Shrinking Mercury is Active After All

This has a discernible effect in the planet’s tenuous atmosphere and may lead to a new paradigm on how these airless bodies maintain their ethereal envelopes. The findings are to be presented at the annual Meeting of the Division of Planetary Sciences of the American Astronomical Society at National Harbor, Maryland, this week, by Apostolos Christou at the Armagh Observatory in Northern Ireland, Rosemary Killen at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and Matthew Burger of Morgan State University in Baltimore, working at Goddard. Mercury appears to undergo a recurring meteoroid shower when its orbit crosses the debris trail left by comet Encke. (Artist's concept.) Credits: NASA/Goddard Earthlings are no strangers to the effects of cometary dust on a planet and its environment.

That “something” arrived in the form of a cometary dust stream. The 1995 Hubble photo that changed astronomy. Tmelapse at Mauna Kea observatory - GIF on Imgur. Milky Way. Zoom to the Moon. Why You Should Put YOUR MASK On First (My Brain Without Oxygen) - Smarter Every Day 157. Elliptical orbits of the planets. Temperatures from absolute cold to absolute hot. Jupiter. Rosetta comet probe given termination date. Image copyright ESA The Rosetta probe will be crash-landed on Comet 67P on Friday 30 September, the European Space Agency has confirmed.

Rosetta comet probe given termination date

The manoeuvre, which is expected to destroy the satellite, will bring to an end two years of investigations at the 4km-wide icy dirt-ball. Flight controllers plan to have the cameras taking and relaying pictures during the final descent. Sensors that "sniff" the chemical environment will also be switched on. All other instruments will likely be off. Flight dynamics experts have still to work out the fine details, but Rosetta will be put into a tight ellipse around the comet and commanded to drop its periapsis (lowest pass) progressively. Mission managers have previously talked about bringing Rosetta down in a place dubbed "Agilkia" - the location originally chosen to land its surface robot, Philae, in November 2014. Image copyright ESA/Rosetta/NAVCAM Today, the probe is nearly half a billion km from the Sun. This will not be the case with Rosetta, however.

Where is Juno? As of May 6, 2016, Juno is approximately 450 million miles (724 million kilometers) from Earth.

Where is Juno?

The one-way radio signal travel time between Earth and Juno is currently about 40 minutes. Juno is traveling at a velocity of approximately 60,000 miles per hour (about 26.9 kilometers per second) relative to Earth, 15,000 miles per hour (about 6.7 kilometers per second) relative to the Sun, and 13,000 miles per hour (about 6 kilometers per second) relative to Jupiter. Juno has now travelled 1.74 billion miles (2.8 billion kilometers, or 18.73 AU) since launch, and has another 19 million miles to go (31 million kilometers, or 0.20 AU) before entering orbit around Jupiter. The Juno spacecraft is in excellent health and is operating nominally. Juno will arrive at Jupiter on July 4, 2016, at 8:35 p.m. Juno’s onboard color camera, called JunoCam, invites the public to serve as a virtual imaging team. Are You Living in a Simulation? Many works of science fiction as well as some forecasts by serious technologists and futurologists predict that enormous amounts of computing power will be available in the future.

Are You Living in a Simulation?

Let us suppose for a moment that these predictions are correct. One thing that later generations might do with their super-powerful computers is run detailed simulations of their forebears or of people like their forebears. Because their computers would be so powerful, they could run a great many such simulations. Earth Rotation. Moon Despina casts it's shadow on Neptune. Is the Solar System Really a Vortex? - Universe TodayUniverse Today. The short answer?

Is the Solar System Really a Vortex? - Universe TodayUniverse Today

No. Not in the way that a popular animated gif insinuates, at least. If you’re even a casual space fan you may have seen a viral gif animation showing our solar system traveling through space, the motions of the planets tracing corkscrew “vortex” paths around a line-driving Sun. While it’s definitely intriguing to watch (in that mesmerizingly-repetitive gif fashion) and rendered with a talented flair for design, there are two fundamental problems with it. One: it’s not entirely correct, scientifically, and two: its creator’s intention is to illustrate a decidedly un-scientific point of view about the Solar System and the Universe as a whole.

For the long answer, I now offer up the stage to astrophysicist Rhys Taylor, who recently posted an in-depth article describing why the planets do yet move… just not like that. Reposted with permission from Rhys Taylor’s blog, Physicists (Formerly) of the Caribbean: Solar system “vortex” gif (by DjSadhu) He clarifies : *Yes, they are. Solar system's Ecliptic vs Galactic Plane.