Then there were the 3D printers making a big showing compared to the year prior, in which MakerBot unveiled the only high-profile entry in the space.
Developed with direct input from both Electronic Arts and Visceral Games, the ASTRO Gaming Dead Space 3 speaker tags will feature artwork taken directly from the game to ensure a stylish, authentic and entirely terrifying representation of the latest entry in the Dead Space saga.
ENGADGET: Astro to offer Dead Space 3-themed A30 and A40 headsets on February 5th
And Software.com gets an entry into the wireless infrastructure space -- a space that everyone wants to play in.
CNN: Technology - Phone.com and Software.com plan merger to provide unified messaging
One of the big barriers to entry could be retail shelf space.
Fitbit's been in the fitness-tracking game for a while now, but today marks its first official entry into the wearable band space.
However, with the acquisition of Kayak, it marks its entry in the meta-search space.
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Priceline recently announced its acquisition of Kayak, a leading travel search company, which marks its entry into the meta-search space.
FORBES: Breaking Down Priceline's Business And Stock Drivers
Despite the threat of recent entrants and relatively low barriers to entry in the car-sharing space, Zipcar possesses several strengths which it can use to its advantage.
Quickly ringing up millions in sales, Dannon soon found itself angling for shelf space with a probiotic entry called YoPlus, from its chief competitor, General Mills' Yoplait, and others followed.
On the showfloor here at Pepcom, the company was able to give us a first look at the Ascend W1: it's first entry for the Windows Phone 8 space.
The entry of high reputation universities into the MOOC space where they (currently) provide courses for free could be a game changer for this tier of players if someone figures out accreditation and degree granting.
FORBES: The Imminent Shakeout? Disruptive Innovation and Higher Education
But, with the large-scale entry of the European Aeronautic, Defense and Space (EADS) consortium into the U.S. market, DoD is finding itself in a procurement Catch-22 that would have even Joseph Heller, the creator of the phrase, in awe.
CENTERFORSECURITYPOLICY: DoD in Catch-22 when dealing with EADS
Microsoft recently launched Office 365, a web-based productivity software product, to mark an entry into the fast-growing cloud-computing space.
FORBES: Microsoft Stock Has Upside To $28 But Office Franchise Is A Drag
The report also examines the possibility that it could have been space junk burning up on re-entry -- citing the Satview website, which notes that an object from orbit was due to burn through Earth's atmosphere at around that time.
The three joined the ThinkQuest Website design contest with a web site entry entitled "Ocean AdVENTure: From Deep Sea to Deep Space".
"I think it lowers the barriers to entry for satellite launch, and for the exploration and exploitation of space technology, for smaller companies, university centers, " he said.
Second, the recent entry of car rental giants such as Hertz into the car sharing space along with major European car-sharing player Car2go has dented investor confidence in Zipcar.
The unmanned Dragon spacecraft cast off from the International Space Station early Thursday morning and survived a fiery re-entry through Earth's atmosphere to make an apparently flawless splashdown in the Pacific Ocean off the coast of Baja California.
MSN: SpaceX showered with praise for success of Dragon mission
Critics said that it was wasting money in a space (e-commerce) that had very few barriers to entry.
FORBES: Why the "Winner Takes All" Strategy Doesn't Always Work
"When they did attempt to apprehend the applicant, at the home of an associate, the associate attempted to prevent police from gaining entry into the house where they found Mr Bryson in the converted roof-space bedroom, " the lawyer said.
It was a gash on the wing of space shuttle Columbia that caused its destruction and the deaths of seven astronauts during re-entry February 1, 2003.
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