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What are the Different Masses of the Planets?


It is a well known fact that the planets of the Solar System vary considerably in terms of size. For instance, the planets of the inner Solar System are smaller and denser than the gas/ice giants of the outer Solar System.

A Star Is About To Go 2.5% The Speed Of Light Past A Black Hole


Since it was first discovered in 1974, astronomers have been dying to get a better look at the Supermassive Black Hole (SBH) at the center of our galaxy.

Spectacular Launch of Most Powerful Atlas Completes Constellation of Navy’s Advanced Tactical Comsats


Today’s (June 24) spectacular launch of the most powerful version of the venerable Atlas V rocket from the sunshine state completes the orbital deployment of a constellation of advanced tactical communications satellites for the U.S.

Astronomy Cast Ep. 418: Error 418 – I’m a Teapot!

Visit the Astronomy Cast Page to subscribe to the audio podcast! We record Astronomy Cast as a live Google+ Hangout on Air every Monday at 12:00 pm Pacific / 3:00 pm Eastern.

HiRISE Captures Curiosity on the Naukluft Plateau


Viewing orbital images of the rovers as they go about their business on the surface of Mars is pretty cool.

Weekly Space Hangout – June 24, 2016: Dr. James Green

Host: Fraser Cain (@fcain) Special Guest: Dr. James Green is the NASA Director of Planetary Science. Guests: Morgan Rehnberg (MorganRehnberg.com / @MorganRehnberg) Dave Dickinson (www.astroguyz.com / @astroguyz) Kimberly Cartier ( KimberlyCartier.org / @AstroKimCartier ) Their stories this week: Evidence for volcanic history on Mars Impact of Brexit on UK science uncertain FRIPON: A New All-Sky Meteor Network A Solstice Full Moon Water on (under) Pluto?

Centaurs Keep Their Rings From Greedy Gas Giants


When we think of ring systems, what naturally comes to mind are planets like Saturn. It's beautiful rings are certainly the most well known, but they are not the only planet in our Solar System to have them.

Antares Return to Flight Launch Likely Slips to August, Cygnus Completes Atmospheric Reentry


The long awaited maiden launch of Orbital ATK’s revamped Antares commercial rocket utilizing new first stage engines, from its Virginia launch base, will likely slip from July to August, a company spokesperson confirmed to Universe Today.

Can Boeing Launch A Crewed Starliner By February 2018?


Boeing thinks it can have its Starliner spacecraft ready to fly crewed missions by February, 2018. This is 4 months later than the previous date of October 2017.

Time For NASA To Double Down On Journey To Mars


Since the Authorization Act of 2010, NASA has been pushing ahead with the goal of sending astronauts to Mars by the 2030s.

Port Canaveral Considers Charging SpaceX 14 Times Normal Fee For Booster Return


A dispute may be brewing between SpaceX and the Canaveral Port Authority, where the private space company brings its recovered boosters back to land.

Pancaked SpaceX Falcon Pulls into Port After Trio of Spectacular Landings


CAPE CANAVERAL AIR FORCE STATION, FL — The pancaked leftovers of a SpaceX Falcon 9 first stage from last week’s successful commercial launch but hard landing at sea, pulled silently into its home port over the weekend - thereby ending a string of three straight spectacular and upright soft ocean landings over the past two months.

Huge Plasma Tsunamis Hitting Earth Explains Third Van Allen Belt


The dynamic relationship between Earth and the Sun two sides. The warmth from the Sun makes life on Earth possible, but the rest of the Sun's intense energy pummels the Earth, and could destroy all life, given the chance.

What Are The Diameters of the Planets?


The planets of our Solar System vary considerably in size and shape. Some planets are small enough that they are comparable in diameter to some of our larger moons - i.e.

Messier 15 (M15) – The Great Pegasus Cluster


Welcome back to Messier Monday! Today, in our ongoing tribute to Tammy Plotner, we take a look at the M15 globular cluster, one of the oldest and best known star clusters in the night sky.

Finding “The Lost Science” of 2001: A Space Odyssey


The film 2001: A Space Odyssey brought space science to the general masses. Today we may consider it as common place, but in 1968 when the film was released, humankind yet to walk on the Moon.

Carnival of Space #462


This week's Carnival of Space is hosted by Zain Husain at the Brownspaceman.com blog. Click here to read Carnival of Space #462.

Seeking the Summer Solstice


Can you feel the heat? If you find yourself north of the equator, astronomical summer kicks off today with the arrival of the summer solstice.

NASA Brings Back the X-Plane, and This One’s Electric


While NASA has had a long and storied history of building and testing experimental aircraft – called X-planes -- it has been almost a decade since the space agency has developed any new aircraft.

Saturn V’s New Mission Is To…Mississippi?


Tourist attractions can be pretty hokey. In the part of Canada where I'm from, one town boasts the "largest hockey stick in the world." I'm not kidding.


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