OK, they literally don't write them like this anymore. On the 18th of October, 1967, spoilsport Russians landed a probe on Venus and proved once and for all it wasn't the exotic, romantic planet of so many science fiction tales. A year later, Aldiss and Harrison published this collection of stories and essays culled from years long past, to commemorate that lost world.
The result is an intriguing, eclectic mix of sci-fi like your grandad used to read, and short scholarly articles, many of them as outdated as the SF. There's one utterly charming 1882 report by the Astronomer Royal, Sir Robert Ball, in which he describes his attempt to view the transit of Venus across the sun, something that only happens a couple of times in more than a century, from an observatory in Dunsink, Ireland, in December. Ireland. In December. It's the most British thing ever.
All-in-all, this was an unspectacular, enjoyable curio, which in its way has as much to say about the SF scene of 1968 as it does about the fictive history of Venus in the preceding years. Who on earth would even think of publishing a book that mixed SF stories and scientific essays today?
I give this three stars, but one of those is definitely for quirkiness, and your mileage may vary.