eredeti ár:
A termék ára Líra Könyv Zrt.-nél, ami nem tartalmaz online kedvezményt.
665 Ft
online ár:
Webáruházunkban a termékek mellett feltüntetett fekete színű online ár csak internetes megrendelés esetén érvényes. Amennyiben a Líra bolthálózatunk valamelyikében kívánja megvásárolni a terméket, akkor az adott boltban lévő ár az irányadó.
eredeti ár:
A termék ára Líra Könyv Zrt.-nél, ami nem tartalmaz online kedvezményt.
2350 Ft
online ár:
Webáruházunkban a termékek mellett feltüntetett fekete színű online ár csak internetes megrendelés esetén érvényes. Amennyiben a Líra bolthálózatunk valamelyikében kívánja megvásárolni a terméket, akkor az adott boltban lévő ár az irányadó.
eredeti ár:
A termék ára Líra Könyv Zrt.-nél, ami nem tartalmaz online kedvezményt.
2350 Ft
online ár:
Webáruházunkban a termékek mellett feltüntetett fekete színű online ár csak internetes megrendelés esetén érvényes. Amennyiben a Líra bolthálózatunk valamelyikében kívánja megvásárolni a terméket, akkor az adott boltban lévő ár az irányadó.
ár a könyvön:
Az eredeti ár (könyvre nyomtatott ár), a kiadó által ajánlott fogyasztói ár, amely megegyezik a bolti árral (bolti akció esetét kivéve).
6699 Ft
online ár:
Webáruházunkban a termékek mellett feltüntetett fekete színű online ár csak internetes megrendelés esetén érvényes. Amennyiben a Líra bolthálózatunk valamelyikében kívánja megvásárolni a terméket, abban az esetben az eredeti ár (könyvre nyomtatott ár) az érvényes, kivétel ez alól a boltban akciós könyvek.
eredeti ár:
A termék ára Líra Könyv Zrt.-nél, ami nem tartalmaz online kedvezményt.
4990 Ft
online ár:
Webáruházunkban a termékek mellett feltüntetett fekete színű online ár csak internetes megrendelés esetén érvényes. Amennyiben a Líra bolthálózatunk valamelyikében kívánja megvásárolni a terméket, akkor az adott boltban lévő ár az irányadó.
eredeti ár:
A termék ára Líra Könyv Zrt.-nél, ami nem tartalmaz online kedvezményt.
990 Ft
online ár:
Webáruházunkban a termékek mellett feltüntetett fekete színű online ár csak internetes megrendelés esetén érvényes. Amennyiben a Líra bolthálózatunk valamelyikében kívánja megvásárolni a terméket, akkor az adott boltban lévő ár az irányadó.
by richard tresch fienberg |11New and Improved!many products that proclaim themselves "new and improvedl" are really just the same old thing in a fancier package. That's not the case with this issue of Sky Telescope, the first of our new design. We've worked for nearly a year to make the magazine...
Silent(ly) RunningJay White ponders the lonely isolation of a spacecraft bound for the stars.It's been more than 30 years since that night when the lights in the theater came up and tears filled my eyes. The film Silent Running, just ended, should have affected me because it showed Earth's last...
SpectrumEyes on the PrizeNobody goes into astronomy to get rich. Most astronomers are driven instead by intense curiosity about the universe around us. All the same, no astronomer vi'ould turn down a big check, especially one with no strings attached a Nobel Prize, for instance. Too bad there...
spectrumThe Wrong StuffWhen Apollo 17, NASA's final lunar-landing mission, ended 30 years ago this month, any-thing seemed possible. After all, it had taken only eight years to go from Yuri Gagarin's first orbit of the Earth to Neil Armstrong's first step on the Moon. Sure-ly by the dawn of the...
STCPHEN JAMES O'MEARAOne World, One HobbyOn September 4th National Public Radio aired a report on the overt racism sometimes encountered by foreigners in Japan, where those born elsewhere are called gaijin "outside persons." The broadcast perplexed me, because I had just returned from the Tainai...
New Kids on the BlockAs the universe expands, so does the amount of astronomical research conducted by professionals and the number of telescopes used by amateurs, k In our ongoing effort to keep readers well informed about both the science and the hobby, Sky Telescope has expanded too. When I...
The Great MythIt happened again: A speaker at a recent gathering of amateur astronomers got up and said, "This is the most expensive hobby you could have," and the old hands in the audience responded with a loud murmur of assent. I've heard this claim repeated often, and it always elicits the same...
Cosmologk lllogicMy grandfather was born 100 years ago and grew up in a static universe with no beginning or end. A century later, my sons are growing up in a universe that exploded from nothing billions of years ago and is thinning out as the eons go by. This overhaul of our world picture is...
spectrumSteady As She GoesBI y coincidence this January 2001 issue of Sky Telescope is volume I 101, number 1, so we begin the new millennium (for real this time) I with our own special turn of the odometer. This doesn't mean ST is 100 years old, though. From 1941 through 1959 one volume did equal...
Running Running When Gary Seronik showed me the final stats concerning our Messier Marathon (his summary appeared in the July issue, page 122), I was disappointed. We had given this competition solid play in the March issue and on our Web site, with lots of tips on how to do the job right. But...
Why Don't You Name Stars?Go ahead! There's nothing to stop you! You, anyone else, any enterprise has an equal right to moniker stars.It's widely, though incorrectly, believed that the International Astronomical Union has the prerogative to name stars. Yes, the lAU is officially recognized to name...
spectrumIt's Time to Say Goodbyeuriously or perhaps not I'm paying only half-attention as 1 begin to write this, my last editorial. My concentration has been shangliaied by a mom and three baby skunks, who have just wandered into our backyard to gobble fugitive birdseed. Outside my study window...
FOCAL POINTAstronomy as PlayQCIENCE is a wonderful thing!3 if one does not have to earn one's living at it," wrote Albert Einstein. He knew that science is play. He played with his equations like a kid with a new toy. "Only when we do not have to be accountable to anybody can we find joy in...
Astronomy's Magic ReachJ o gather the whole of astronomy is like trying to catch dust bunnies dancing around a drafty room. Whenever you grab J one, another scampers by. Astronomy is as multifaceted as a brilliant-cut diamond, an infinite font of ideas and imagination. So much to learn, so much to...
In Search of Martian SeasAs SEEN through the television eyes . of Mariner and Viking spacecraft, Mars is truly a global desert. White polar caps, occasional clouds, and dustings of surface frost don't change that fact. But abundant evidence, like ancient river beds, demonstrates that such was not...
SpectrumSuch a Deal!One of the neat things about working at ST is that no day ever unfolds as you expect. A conversation with a surprise visitor, for example, can cause new thinking. That's what happened during Christian Nitschelm's visit last July.I first met this astronomer/high-school teacher...
April 1963 10,000th pageSpectrum50,000 Pages and CountingThanks to the staggering arithmetic skills of last summer's editorial intern. Will Dane, we know that this is ST's 50,000th published page. It's a trivial milestone, really, but it gives me another excuse to pontificate.As you learned in the...
^IRMFüZZYFEELING-ía-Ruitea: Mostly Alive"Junk" Opiits [or Slar-gajiiH) anil BiidiiiijspectrumRecycling ''Junk" Opticsir, cobra!" My bicycle-rickshaw driver's exclamation echoed ^^^ more surprise than caution, yet he sure got my attention! "You ^^ are very lucky, sir, to see a black cobra," he...
How many times have we been flogged by hoopla concerning the Y2K computer bug? A couple of years ago we were told that when the year flipped to zeros planes would crash wholesale, financial institutions would run amuck, and PCs wouldn't fire up. Now it seems that only ripples are likely to blemish...