20 Maret 2011

Supermoon, Fenomena Bulan


Supermoon merupakan sebuah fenomena alam biasa. Meskipun begitu, fenomena ini mungkin merupakan peristiwa yang ditunggu- tunggu selain hujan meteor beberapa waktu lalu.Supermoon adalah penampakan bulan purnama lebih besar dari biasanya. Fenomena ini hanya terjadi 18 tahun sekali, bulan tampak sekitar 14 persen lebih besar.

Dalam dunia astronomi, Bulan bisa berada di titik terjauh dan terdekat dengan Bumi. Titik terjauh dikenal dengan apogee, sedangkan titik terdekat dikenal dengan perigee. Saat Bulan mencapai titik terdekat atau perigee inilah, fenomena yang dikenal dengan supermoon terjadi.Fenomena supermoon ini merupakan fenomena di mana posisi bulan berada di jarak terdekat dengan bumi. Jarak terdekat itu diperkirakan terjadi setelah tengah malam ini, Sabtu (19/3/2011). Bulan akan berada di titik terdekatnya dnegan bumi (perigee).

Publikasi space.com menyebutkan, Bulan akan mencapai jarak terdekatnya dengan Bumi dalam kurun waktu 18 tahun terakhir. Bulan "hanya" 356,577 kilometer dari Bumi. Ini 30.000 kilometer lebih dekat dengan jarak rata-rata Bumi-Bulan biasanya yang berkisar 382.900 km.

Berdasarkan waktu Indonesia, jarak terdekat Bumi-Bulan tersebut akan terjadi pada Minggu (20/3/11) dini hari pada pukul 02.10 WIB. Puncak purnamanya sendiri bisa dinikmati pukul 01.11 atau 59 menit sebelum jarak terdekat Bumi-Bulan dicapai.

Namun Fenomena supermoon ini juga akan menyebabkan air pasang yang lebih tinggi dari purnama-purnama yang biasa. Jika didukung dengan angin yang tinggi pula, air pasang akan lebih besar sehingga bisa saja meluap.

Kalau angin cukup besar, air pasang akan semakin tinggi karena akan ada gelombang. Selain itu, Supermoon ini tidak akan berdampak lain. Jadi bersiaplah menyaksikan fenomena alam ini. untuk bisa melihatnya, tentu saja dibutuhkan cuaca cerah. (sayang di malang langitnya terdistorsi sama almpu, jadi penegn pulang kampung)

Apakah benar fenomena Supermoon menyebabkan bencana?

Fenomena Supermoon ini sering kali dikaitkan dengan ancaman sejumlah bencana seperti gelombang pasang, letusan gunung berapi, bahkan gempa bumi.Benarkah supermoon akan membawa bencana bagi bumi?

Tahun ini, Bulan hanya akan berjarak sekitar 221.567 mil atau 356.578 kilometer. Jarak paling dekat dalam kurun waktu 18 tahun. Beberapa orang menghubung-hubungkan fenomena ini dengan bencana. Adalah astrolog, Richard Nolle yang awalnya menghubung-hubungkan fenomena supermoon dengan bencana alam. Ia mengklaim supermoon akan memicu gempa bumi, gunung meletus, dan badai besar.

Salah satunya yang dipakai jadi dasar teori ini adalah fakta tsunami Aceh 2004 yang merenggut lebih dari 200 ribu nyawa terjadi dua minggu sebelum supermoon 2005. Juga gempa 9,0 SR dan tsunami di Jepang, Jumat 11 Maret 2011 yang terjadi delapan hari sebelum supermoon 2011.

Namun, teori ini dibantah Badan Antariksa Amerika Serikat, NASA. Ilmuwan Goddard Space Flight Center NASA, Jim Garvin mejelaskan, supermoon terjadi saat Bulan sedikit mendekat ke Bumi daripada rata-rata. Efek ini paling terlihat saat terjadi bulan purnama. "Bulan akan terlihat lebih besar, meski perbedaan jarak dari Bumi hanya beberapa persen di banding biasanya," kata dia seperti dimuat situs Space.com.

Tetapi kenyatannya? Sebelum dan setelah 2 supermoon terjadi, beberapa kawasan dunia diguncang bencana alam.
Malam Natal 1974, kota negara bagian Darwin, Australia diterjang topan Tracy. Topan dengan kecepatan maksimal 240 kilometer per jam itu mulai terbentuk 21 Desember, menerjang hebat pada malam Natal, 3 hari kemudian dan menghilang 26 Desember 1974.
Berikutnya adalah peristiwa tsunami Aceh, Desember 2004. Dua pekan kemudian— atau awal Januari 2005—bumi dihampiri Supermoon.
Kemudian, sebelum terjadinya Supermoon tahun 2011 ini. Jepang diguncang gempa 9.0 SR dan ditampar tsunami pada Jumat 11 Maret 2011 yang terjadi delapan hari sebelum supermoon terjadi. Adakah penjelasan ilmiah mengenai hal ini ataukah hal ini merupakan isu tahayul belaka?
Perlu diketahui. Penyebab gempa bumi adalah pergeseran lempeng tektonik. Bukan pengaruh gravitasi bulan. Dan selama ini, bulan belum pernah mampu mempengaruhi tanah di bumi. Kalaupun bisa mempengaruhi, hanya sebatas air laut saja.
Meskipun begitu, sebagai manusia kita tak tahu apa- apa. Hanya bisa berteori. Jadi kaji aja fenomena ini, lunar prigee atau Supermoon mungkin akan membawa kejutan suatu hari annti.

Percy Jackson Audiobook

Lightning Thief, the (2005)
by Rick Riordan
Summary (From the publisher):
Percy Jackson is a good kid, but he can't seem to focus on his schoolwork or control his temper. And lately, being away at boarding school is only getting worse -- Percy could have sworn his pre-algebra teacher turned into a monster and tried to kill him. When Percy's mom finds out, she knows it's time that he knew the truth about where he came from, and that he go to the one place he'll be safe. She sends Percy to Camp Half Blood, a summer camp for demigods (on Long Island), where he learns that the father he never knew is Poseidon, God of the Sea. Soon a mystery unfolds and together with his friends -- one a satyr and the other the demigod daughter of Athena -- Percy sets out on a quest across the United States to reach the gates of the Underworld (located in a recording studio in Hollywood) and prevent a catastrophic war between the gods. But to succeed on his quest, Percy will have to unravel a treachery more powerful than the gods themselves.

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Sea of Monsters, the (2006)
by Rick Riordan
Summary (From the publisher):
Percy Jackson's seventh-grade year has been surprisingly quiet. Not a single monster has set foot on his New York prep-school campus. But when an innocent game of dodgeball among Percy and his classmates turns into a death match against an ugly gang of cannibal giants, things get...well, ugly. And the unexpected arrival of Percy's friend Annabeth brings more bad news: the magical borders that protect Camp Half-Blood have been poisoned by a mysterious enemy, and unless a cure is found, the only safe haven for demigods will be destroyed.

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Titan's Curse, the (2007)
by Rick Riordan
Summary (From the publisher):
When the goddess Artemis goes missing, she is believed to have been kidnapped.And now it's up to Percy and his friends to find out what happened. Who is powerful enough to kidnap a goddess? They must find Artemis before the winter solstice, when her influence on the Olympian Council could swing an important vote on the war with the titans. Not only that, but first Percy will have to solve the mystery of a rare monster that Artemis was hunting when she disappeared -- a monster rumored to be so powerful it could destroy Olympus forever.

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Battle of the Labyrinth, the (2008)
by Rick Riordan
Summary (From the publisher):
Percy Jackson isn't expecting freshman orientation to be any fun. But when a mysterious mortal acquaintance appears on campus, followed by demon cheerleaders, things quickly move from bad to worse.

Time is running out as war between the Olympians and the evil Titan lord Kronos draws near. Even the safe haven of Camp Half-Blood grows more vulnerable by the minute as Kronos's army prepares to invade its once impenetrable borders. To stop the invasion, Percy and his demigod friends must set out on a quest through the Labyrinth'a sprawling underground world with stunning surprises at every turn.

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Last Olympian, the (2009)
by Rick Riordan
All year the half-bloods have been preparing for battle against the Titans, knowing the odds of victory are grim. Kronos's army is stronger than ever, and with every god and half-blood he recruits, the evil Titan's power only grows. While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods to stop the Lord of Time.

In this momentous final book in the New York Times best-selling Percy Jackson and the Olympians series, the long-awaited prophecy surrounding Percy's sixteenth birthday unfolds. And as the battle for Western civilization rages on the streets of Manhattan, Percy faces a terrifying suspicion that he may be fighting against his own fate.

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17 Maret 2011

Exam, Oh, exam...

Start from 11th this march untill 22th march, i got an exam, or we call it middle test. Ulangan kali ini nggak kayak yang dulu. Dulu pasti heboh ngeprint past paper. Tapi sekarang, santai aja. Yang penting paham konsep pelajarannya dan sedikit latihan. Beres.
Tapi perubahan seperti ini juga nggak terllau baik. Terlalu santai menurutku.

13 Maret 2011

Am I Spendthrift?

This feeling haunt me. Why? Because if i have a lot of money, i always bought many things. Especially books. Although sometimes i bought clothes, jacket, shoes, watch, or any else. But, really, this behave out of my mind. I can't control that. Especially when i see books. It's look like when i see delicious ice cream. Yeah, books is my food.
March maybe the lucky months for me. I got 500.000 from competition and i use it to buy many things. I already use it to buy
1. books. Rp. 90.000
2. Watch Rp. 70.000
3. Mp3 Player Rp. 250.000
4. Others Rp. 50.000
All of that spend Rp. 410.000.
Whereas i want to save it. Huh...

11 Maret 2011

Tulalit

Kenapa ya, banyak yang nyari masalah sesorah ataupun pidhato bahasa jawa. Aku nggak habis pikir

05 Maret 2011

Incredible Night

This night was incredible night for me. Because my house, Mantaray got "The Extra Ordinary House" in movie night. woo... unpredictable. Ithought my house will be an usual house, but in this chance, we prepare it well.
The theme from House Dove is Spectrum in White, but we define it as a "Bhinneka Tunggal Ika" or the means is, although we are differet, we are one. So, my house wear pakaian adat from all across indonesia. I wore Borneo Clothes, i made it from cupboard. very simple but nice.
The Movie night run good and the movie was interesting. The tittle is Despicaple Man. Very fun and crazy but still have moral value.
At about 10.00 pm, we go back to our room,the movie night is end. I just hope on my house movie night, we can make it good. I'm sleepy and tomorrow i'll join MacCase in Machung University, please pray for me!