I think blind people are severely underestimated here.
It's true that being blind is a huge disadvantage in our society, but that's only because everything we build is made with the target audience of two-eyed humans. Which of course, we did because we use our eyes all the time, even for things where they are not the best tool. Among other things, eyes are slow and suffer from tunnel vision. A very simple example: traffic lights. You have to stare at them, and keep staring at them. In some cases for minutes. And they expect you to react right away when they turn green. (Some countries have fixed the latter by lighting up orange before switching to green though) The traffic signals for blind people are not as widespread, but when they are available, you'll notice that they are much more user friendly than their visible counterparts, even for people that aren't blind.
I think the assumption that blind people could not create advanced technologically is false. Blind people tend to take a backseat in our society, but when everyone is blind, we are not collectively going to sit on hour hands. We are certainly not going to wait for a predator to pick us off one by one. It's our ears that will safe our skin. Compared to those, lack of eyesight is a minor disadvantage. We create tools that offset our weaknesses. We make spears, because we have no natural weapons. I'm sure we can come up with something that prevents us from running into trees. 998
It's true that no amount of tools will help someone from present day society if he has just lost his eyes, but if a species never had eyes to begin with, they wouldn't be nearly as helpless.
As for computers, I don't think it is much of a stretch either that we would have invented it by now. They wouldn't have evolved into machines with displays for output, sure, but thats hardly the only way we can interact with them. These days, even computers with displays have support for blind people. See screen readers and the Web Accessibility Initiative (a standard for websites to enable the use of voice interaction, etc). Remember that while those are crutches, they are only necessary because we didn't design computers for blind people right from the start. Besides, why would eyesight be required to create a machine that does calculations for you? Because of the details involved? Considering how huge the first computers were, I sincerely doubt that we couldn't take the same approach of starting big and miniaturize when we get more comfortable in the field.
Books would probably be produced earlier if we had been blind. Putting ink on paper in seemingly arbitrary patterns, is rather complicated compared to punching holes in a rectangular grid.
As for space travel. There's as much incentive for blind people to explore as there is for people with eyesight. Blind people, too, will wonder what's above their heads and beyond the water. In fact, they might have been even more curious than we are. Without eyesight, a vast, empty ocean is more of a mystery.
The majority of space is not observed with human eyes, by the way. Many of the pictures you see from space agencies like NASA are not even 'just close-up views'. The colors used are simply made up, because the observed phenomenon usually have nothing to do with visible (colored) light. We made tools for observering the stars, because our eyes are inadequate to make any meaningful observations. Well, we can take note of the location of stars, and how the moon is lit at this time of the month, but that's about it. We cannot even look straight at the sun!
If we're making tools for stellar observation anyway, and we build computers that interact with us in a non-visual way, then we'd make the same progress as we do now.
So, how would a blind species reach the stars? The same way we did, with passion and the occasional flash of brilliance. 693