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kisah org atas bulan: angkasawan amerika, m'sia dll [merged]
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The Moon is the only natural satellite of Earth:
orbit: 384,400 km from Earth
diameter: 3476 km
mass: 7.35e22 kg
Called Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies.
The Moon, of course, has been known since prehistoric times. It is the second brightest object in the sky after the Sun. As the Moon orbits around the Earth once per month, the angle between the Earth, the Moon and the Sun changes; we see this as the cycle of the Moon's phases. The time between successive new moons is 29.5 days (709 hours), slightly different from the Moon's orbital period (measured against the stars) since the Earth moves a significant distance in its orbit around the Sun in that time.
Due to its size and composition, the Moon is sometimes classified as a terrestrial "planet" along with Mercury, Venus, Earth and Mars.
The Moon was first visited by the Soviet spacecraft Luna 2 in 1959. It is the only extraterrestrial body to have been visited by humans. The first landing was on July 20, 1969 (do you remember where you were?); the last was in December 1972. The Moon is also the only body from which samples have been returned to Earth. In the summer of 1994, the Moon was very extensively mapped by the little spacecraft Clementine and again in 1999 by Lunar Prospector.
The gravitational forces between the Earth and the Moon cause some interesting effects. The most obvious is the tides. The Moon's gravitational attraction is stronger on the side of the Earth nearest to the Moon and weaker on the opposite side. Since the Earth, and particularly the oceans, is not perfectly rigid it is stretched out along the line toward the Moon. From our perspective on the Earth's surface we see two small bulges, one in the direction of the Moon and one directly opposite. The effect is much stronger in the ocean water than in the solid crust so the water bulges are higher. And because the Earth rotates much faster than the Moon moves in its orbit, the bulges move around the Earth about once a day giving two high tides per day.
But the Earth is not completely fluid, either. The Earth's rotation carries the Earth's bulges get slightly ahead of the point directly beneath the Moon. This means that the force between the Earth and the Moon is not exactly along the line between their centers producing a torque on the Earth and an accelerating force on the Moon. This causes a net transfer of rotational energy from the Earth to the Moon, slowing down the Earth's rotation by about 1.5 milliseconds/century and raising the Moon into a higher orbit by about 3.8 centimeters per year. (The opposite effect happens to satellites with unusual orbits such as Phobos and Triton).
The asymmetric nature of this gravitational interaction is also responsible for the fact that the Moon rotates synchronously, i.e. it is locked in phase with its orbit so that the same side is always facing toward the Earth. Just as the Earth's rotation is now being slowed by the Moon's influence so in the distant past the Moon's rotation was slowed by the action of the Earth, but in that case the effect was much stronger. When the Moon's rotation rate was slowed to match its orbital period (such that the bulge always faced toward the Earth) there was no longer an off-center torque on the Moon and a stable situation was achieved. The same thing has happened to most of the other satellites in the solar system. Eventually, the Earth's rotation will be slowed to match the Moon's period, too, as is the case with Pluto and Charon.
Actually, the Moon appears to wobble a bit (due to its slightly non-circular orbit) so that a few degrees of the far side can be seen from time to time, but the majority of the far side (left) was completely unknown until the Soviet spacecraft Luna 3 photographed it in 1959. (Note: there is no "dark side" of the Moon; all parts of the Moon get sunlight half the time.
[ Last edited by seribulan on 18-10-2003 at 07:52 PM ] |
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Andrea_Pirlo This user has been deleted
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eheheh...ko nie bulan asyik..the moon,, erkkk...
korang tak berciter2 nak jadik angkasawan ker?
malaysia dah offer tue.. |
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takot meletop cam challenger ker apa ari tuh...
tak kahwen lagik oi..kkekekekek.. |
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Andrea_Pirlo This user has been deleted
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eh, bukn challenger..columbia..
kalo meletup pon..ko x kawin agie...takder, la anak, laki ko meraung--
KUALA LUMPUR, 24 Ogos (Bernama) --
Kementerian Sains, Teknologi dan
Alam Sekitar menjangkakan 1,000 sukarelawan akan mendaftar sebagai calon
angkasawan apabila misi mencari angkasawan Malaysia pertama dimulakan akhir
tahun ini.
Ketua Pengarah Agensi Angkasa Negara Prof Datuk Dr Mazlan Othman
berkata sesiapa sahaja boleh mencuba jika mereka berminat dan tidak ada
sebarang had umur ditetapkan untuk mengikuti program itu.
Beliau berkata calon akan melalui beberapa pemeriksaan terlebih dahulu
dengan mereka yang dipilih mesti mempunyai tahap kesihatan yang baik selain
"mempunyai akal fikiran yang bijak".
"Para sukarelawan akan diuji daripada segi psikologi dan tahap
kepintaran mereka," katanya selepas menyampaikan hadiah kepada para
pemenang program Marikh Merdeka (M2) yang diadakan sempena sambutan Bulan
Kemerdekaan 2003 di Planetarium Negara di sini.
Calon yang terpilih akan dihantar ke Rusia untuk dilatih selama satu
setengah tahun sebelum dihantar ke angkasa lepas.
-- BERNAMA
sos:http://www.bernama.com/merdeka/bm/news.php?id=12433 |
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hah...sesaper yg nak kenai "bulan"
sudi2kan lah...menunggu nih
kunjungan sedara dari bumi nih...
hheheheheheh... |
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Andrea_Pirlo This user has been deleted
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memacam la ko nie.. heheheh |
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wah..ada can nak jadik Datin...
kekekkekeek...
teringin gak nak jadik astronaut.... |
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ni saya ada satu fact...
kan bumi kita ada 24 jam & dibahagikan kpd beberapa zon waktu
1 darjah dlm ada 4minit (geografi) so setiap 4 minit sekali dia akan dengar org bang sebab bumi kita nikan berputar.....dan banyak negara Islam amn pd masa tu...
tapi kalau di fikirkan semula tak logik gak sebab bunyi mana boleh b`gerak tanpa udara ye tak!!!!!
###Hanya ALLAH sahaja yg mengetahui######## |
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ahmed-ahlaken This user has been deleted
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Originally posted by seribulan at 10-7-2003 12:47 AM:
berapa byk bulan da...
kat kel lagi byk bulan...hehe |
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Buzz Aldrin Punches Moon-landing Conspiracy Theorist
http://www.csicop.org/articles/20021018-aldrin/
the "No Lunar Landing" freaks are just stupid.
I'm sure that the entire world's geo-science community is going to lie about the geology of lunar rock samples!
These have been studied extensively in every major university around the world. They have micro-features and crystaline structure simply impossible to recreate on Earth, not to mention unique chemical signatures due to a billion years of high UV exposure.
These guys that rant about the moon landings being fakes are NEVER legitimate scientists and NEVER know a thing about geology. They're just loons who have nothing better to do with their pointless lives. |
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leh tahan gak thread nih ...
jap naik jap turun ...  |
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winzip This user has been deleted
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bende ilmu tak lapuk dek hujan.. |
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Fasa-Fasa Bulan
Manusia memperhatikan fasa-fasa bulan sejak ribu-ribu tahun yang lalu. Bulan sudah digunakan ahli nujum Vedik di India sejak ribu-ribu tahun yang lalu untuk mengira rajah astrologi bulan. Pada masa kini pun, peladang dan tukang kebun menanam mengikut fasa-fasa bulan mengikut almanaknya. Rujuk di bawah untuk mengetahui fasa yang mana sesuai untuk anda...
Orang di Hemisfera Selatan akan nampak bulan di bawah iaitu imej-cermin bulan di langit Hemisfera Selatan. Bagi mereka, bulan membesar bergerak dari kiri ke kanan!
Peredaran bulan mengandungi 8 peringkat. Bulan membesar semasa empat peringkat yang pertama dan bulan menjadi kecil semasa empat peringkat yang kedua.
Anak Bulan (New Moon)
(First [Waxing] Crescent)
Bulan Sabit (First Quarter Moon)
(Waxing Gibbous Moon)
Bulan Penuh (Full Moon)
(Disseminating (Waning Gibbous) Moon)
Bulan Tiga Suku (Last Quarter)
(Balsamic [Waning Crescent] Moon)
Pengikut Wicca menggunakan fasa-fasa bulan dalam upacaranya. Setiap fasa sesuai untuk sesuatu tindakan atau tindak balas.
Masa dari Anak Bulan ke Bulan Sabit baik untuk memulakan rancangan baru, membuat urusan, memulakan projek, mencari kerja, memulakan kegemaran baru atau bertemu orang baru.
Masa dari Bulan Sabit ke Bulan Penuh iaitu masa yang sesuai untuk mementingkan diri sendiri atau memperbesarkan sesuatu projek.
Bulan Penuh iaitu masa untuk menumpukan kepada pencapaian anda dan mempastikan bahawa semua urusan berjalan dengan baik. Lihat apa yang berlaku di hidup anda, lalu buat pembetulan yang sepatutnya.
Masa dari Bulan Penuh ke Bulan Tiga Suku iaitu masa untuk menengok dengan teliti sekeliling anda dan mengenal apa yang terbaik untuk mengatasinya dan apa yang tidak. Masa ini untuk belajar, hal memperbaiki dan mengubahkan rancangan.
Dari Bulan Tiga Suku ke Anak Bulan itu adalah masa untuk meninggalkan situasi yang buruk. Anda seharusnya menyedia diri untuk peringkat pembinaan dan penciptaan yang berikutnya. |
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Andrea_Pirlo This user has been deleted
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aku mnt sangat kalau sastera melayu lama, selalu kaitkan cinta ngn bulan..
patutla seribulan nie jiwang jerks. |
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Arise fair sun, and kill the envious moon
Who is already sick and pale with grief
That though, her maid, art far more fair than she.
Be not her maid since she envious.
Her vestal livery is but sick and green,
And none but fools do wear it. Cast it off.
-Romeo, Romeo and Juliet, 2:2:4 |
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hmmm macam2 dah kluar ttg Bulan ... |
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Author
Post time 20-10-2003 12:34 AM
