• Gina Souizu Marianda

    Selamat datang di blog mahasiswi galau yang 'kan melakukan segala cara 'tuk mengatasi rasa penasarannya...

  • Beautiful Beach

    Bengkulu long beach is a very exotic tourist attraction because of stretch of unspoiled white sand can open will inspire greatness of the almighty. The beach is precisely located west of Bengkulu City. To reach the location which is only 1.5 km from the city center can be reached by rising Sado or Delman which is a traditional transport in the city of Bengkulu...

  • Gothic Girl

    The word 'gothic' is very old, and is used to indicate the style of the Renaissance art of the Middle Ages. It is named after the German tribe of the Goths, who had invaded Italy, and so had broken up the Roman Empire. In the 15th century, people hoping to revive the classical age, they have an idea of ??rebirth or renaissance. Intervention period was called the Middle Age, and we still use the term negative. Because the Italians blamed the Goths to destroy the Roman Empire, they are referred to as Gothic art style of this period, by which they meant barbaric...

  • Flower Villages.

    History of Indonesia since the colonial period to the present can not be separated from agriculture and plantation, due to the sector - this sector has great significance in determining the formation of various economic and social realities in different regions of Indonesia...

  • Tennis Athletes

    The modern game of tennis originated in Birmingham, England in the late 19th century as "lawn tennis" which has close connections to various field/lawn games as well as to the ancient game of real tennis...

  • Red

    The most emotionally intense color, red stimulates a faster heartbeat and breathing. It is also the color of love. Red clothing gets noticed and makes the wearer appear heavier. Since it is an extreme color, red clothing might not help people in negotiations or confrontations...

  • Promotion Girl

    The company was founded by Kiichiro Toyoda in 1937 as a spinoff from his father's company Toyota Industries to create automobiles. Three years earlier, in 1934, while still a department of Toyota Industries, it created its first product, the Type A engine, and, in 1936, its first passenger car, the Toyota AA. Toyota Motor Corporation group companies are Toyota (including the Scion brand), Lexus, Daihatsu and Hino Motors, along with several "non-automotive" companies.TMC is part of the Toyota Group, one of the largest conglomerates in the world...

  • Princess Flower

    Flowers have long been admired and used by humans to beautify their environment, but also as objects of romance, ritual, religion, medicine and as a source of food...

  • Back to Childhood

    Indonesian traditional games when I was a child such as: palak babi, congklak, lompat tali, badus, calabur, lompat kodok, etc.

Archive for Februari 2009



Tahun cahaya (bahasa Inggris:light year) adalah satuan panjang yang didefinisikan sebagai jarak yang ditempuh cahaya dalam satu tahun melewati ruang hampa udara. Istilah tahun yang digunakan untuk perhitungan adalah tahun Julian yang mempunyai 365,25 hari atau 31.557.600 detik. Kadang kala rata-rata tahun tropis 31.556.925,9747 detik digunakan. Karena cahaya menempuh kecepatan 299.792.458 meter per detik (m/s) dalam ruang hampa udara, maka dengan menggunakan tahun Julian, satu tahun cahaya sama dengan 9.460.730.472.580.800 kilometer (5.878.625.373.184 mil).


Tau ngga'??
  • Perlu sekitar 8,3 menit bagi cahaya agar bisa melintas dari Matahari ke Bumi (oleh karenanya, kita berada sekitar 8,3 menit cahaya dari Matahari).
  • Bintang terdekat, Proxima Centauri letaknya sekitar 4,22 tahun cahaya.
  • Galaksi kita, Bima Sakti, diameternya sekitar 100.000 tahun cahaya.
  • Alam semesta yang dapat diamati radiusnya sekitar 13.700.000.000 tahun cahaya.
by wikipedia