... What does this mean?

Like playable areas are comparable to Reach levels? I don't get it.

How big is the entirety of Reach's playspace, anyways? I'm having a tough time imagining all the levels in Reach mashed together into one giant level. Does anyone know how it would compare to, say, the exterior world of Skyrim?

Right. I think we might have heard about that by the Game Informer blowout timeframe. Not sure.

Anyway, any particular reason you happen to speak Portuguese too?

"Os itens de personalização são recompensas que você ganha cada vez que completa uma missão, são bônus que você ganha jogando", explicou Christian. "Às vezes não são modificações, mas novos equipamentos que podem ser utilizados no personagem do jogador, como uma nova armadura ou capacete, ou equipamento que você pode utilizar na sua nave pessoal".

"The customization items are rewards you get every time you complete a mission, bonuses you get by playing", explained Christian. "Sometimes they're not modifications, but new equipments that can be used by the player, like a new armor or helmet, or an equipment you can use on your own personal ship."

Overjoyous emphasis mine.

"Em uma zona social [onde os personagens aparecem em 'terceira pessoa' e os jogadores negociam e recebem missões] você verá vários jogadores com equipamentos completamente diferentes dentro da variação que existe de capacetes, couraças, peças de armadura para pernas, braços[...]"

"In a social area [where characters appear in 3rd person and the players can trade and receive missions] you'll see many players with equipments completely different within the variation of helmets, body armor, leg armor, arm armor that exist[..]"

Recall that the initial concept of halo you were going to be able to drive around the whole thing. After a certain point they may be able to dynamically load sections of the Destiny map so you could theoretically drive around a whole world. Of course, generating that much content will be crazy, but awesome.

I wonder how many destinations they'll include in total. Right now we know they have, if I'm not mistaken, Mercury, Venus, Earth, The Moon, Mars, Saturn, Jupiter, and Europa. Did I miss any that are more or less confirmed? I wonder how many beyond that there will be. Pluto is an obvious choice, and there are other asteroids/moons that would be solid destinations, such as Phobos. Really if they wanted to there's a bunch of additional locales they could include.

I would temper your expectations on this quote as it is nebulous in its definition. It's hard to compare our spaces to Reach because our game is an ever-expanding world where one day the world you are discovering may be one size but the next you realize that there are more areas that open up. Our worlds are far more fungable than what you see at first sight. what may be one size day one may be different day 100. Reach was very large in its perception due to levels like New Alexandria which mainly consisted of empty fly-able space, it's hard to compare the two. In short, comparing the two is tricky due to their unique attributes. My advice is to not worry about the size in any game, as size can be deceiving compared to how much enjoyment you get out of a space.