I write a weekly book review for the Daily News of Galveston County. (It is not the biggest daily newspaper in Texas, but it is the oldest.) After my review appears on Sunday, I post the previous week’s review here on Sunday.
The Moon can make for entertaining science fiction
Fifty years ago, with the successful landing of Apollo 11 on the Moon, it appeared that the road to the expansion of human activity from its cradle on Earth into the immensely larger arena of the solar system was open. The infrastructure built for Project Apollo, including that in the original 1963 development plan for the Merritt Island area could support Saturn V launches every two weeks. Equipped with nuclear-powered upper stages (under active development by Project NERVA, and accommodated in plans for a Nuclear Assembly Building near the Vehicle Assembly Building), the launchers and support facilities were more than adequate to support construction of a large space station in Earth orbit, a permanently-occupied base on the Moon, exploration of near-Earth asteroids, and manned landings on Mars in the 1980s.
But this was not to be. Those envisioning this optimistic future fundamentally misunderstood the motivation for Project Apollo. It was not about, and never was about, opening the space frontier. Instead, it was a battle for prestige in the Cold War and, once won (indeed, well before the Moon landing), the budget necessary to support such an extravagant program (which threw away skyscraper-sized rockets with every launch), began to evaporate. NASA was ready to do the Buck Rogers stuff, but Washington wasn’t about to come up with the bucks to pay for it. In 1965 and 1966, the NASA budget peaked at over 4% of all federal government spending. By calendar year 1969, when Apollo 11 landed on the Moon, it had already fallen to 2.31% of the federal budget, and with relatively small year to year variations, has settled at around one half of one percent of the federal budget in recent years. Apart from a small band of space enthusiasts, there is no public clamour for increasing NASA’s budget (which is consistently over-estimated by the public as a much larger fraction of federal spending than it actually receives), and there is no prospect for a political consensus emerging to fund an increase.... [Read More]
I write a weekly book review for the Daily News of Galveston County. (It is not the biggest daily newspaper in Texas, but it is the oldest.) My review normally appears Wednesdays. When it appears, I post the review here on the following Sunday.... [Read More]
The Beresheet spacecraft, built by Israeli non-profit company SpaceIL, is scheduled to land on the Moon today. Landing operations are expected to begin around 19:00 UTC (you can see a UTC clock in the right side of the title bar of this site). Landing is planned for a site in the north of Mare Serenetatis, on the north-east part of the near side of the Moon, within a 15 km area known to have little rubble or rugged terrain. Here is a preview of the landing process from SpaceIL.
During the recent lunar eclipse (the date on which it occurred depends upon your time zone: mid-eclipse was at 05:12 UTC on 2019-01-21, while the eclipse occurred on the evening of January 20th in western hemisphere time zones) several amateur astronomers capturing the eclipse on video observed a flash of light, just a single video frame, near the limb of the eclipsed Moon just at the beginning of the umbral phase.
The fact that three observers in different locations have so far reported the same flash excludes other explanations such as a reflection off an Earth satellite or a “point meteor” burning up in the Earth’s atmosphere on a trajectory pointed directly at the observer.... [Read More]
At 02:26 UTC on 2019-01-03, the Chinese Chang’e 4 (嫦娥四号) soft lander and rover touched down in the Von Kármán crater on the far side of the Moon. This is the first soft landing on the far side of the Moon, which is never visible from the Earth. Here is a video including animation of the landing and actual images captured during the descent and of the surface after landing.
Since 1994, Fourmilab’s Earth and Moon Viewerhas provided custom views of the Earth and Moon from a variety of viewpoints, using imagery databases which have evolved over the years from primitive images to gigabyte-scale mosaics collected by spacecraft. Views were originally restricted to the Earth, but fifteen years ago, in April 2003, the ability to view the Moon was added, using the global imagery collected by the Clementine orbiter. These data were wonderful for the time, providing full-globe topography and albedo databases with a resolution of 1440×720 pixels. This allowed viewing the Moon as a whole or modest zooms into localities, but when you zoomed in close the results were…disappointing. Here is the crater Copernicus viewed from an altitude of 10 km using the Clementine data.