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Venus’ Fun Facts

Comments dhani — July 20, 2009 / 10:46 am

Venus is the sixth largest planet. Its orbit is almost circular and varies only 1%. It has the most perfect orbit of all of the planets. It is the second planet from the sun. Also, Venus’ rotation is the slowest of all planets. It takes 243 Earth days for it to rotate. The center of [...]

A Brief History of “Black Hole”

Comments dhani — April 16, 2009 / 10:35 pm

Physicist John Wheeler is widely credited with coining the term black hole in his 1967 public lecture Our Universe: the Known and Unknown. He used the term to avoid him repeatedly using sentence “gravitationally completely collapsed star” on his lecture. However, Wheeler insisted that someone else at the conference had coined the term and he [...]

Sirius as Red Star

Comments dhani — February 27, 2009 / 9:51 pm

Many ancient astronomical texts describe the color of Sirius, the brightest star in the sky, as red. These include works by Ptolemy and Lucius Seneca amongst others. The fact has been puzzled Astronomers for many years since Sirius is appears blue with the naked eye. In 1985, German astronomers Wolfhard Schlosser and Werner Bergmann published an [...]

Icarus’ Unusual Characteristic

Comments dhani — February 24, 2009 / 11:10 pm

Asteroid Icarus (1566 Icarus) have unusual characteristic is that at perihelion it is closer to the Sun than Mercury. Named after Icarus of Greek mythology, who flew too close to the Sun, the asteroid was discovered in 1949 by Walter Baade. Icarus makes a close approach to Earth at gaps of 9, 19, or 38 years. [...]

The ‘Music’ from Stars

Comments dhani — October 31, 2008 / 12:26 am

Have you ever heard the sound of stars? Scientists have recorded the sound of three stars similar to our Sun using France’s Corot space telescope. A team writing in Science journal says the sounds have enabled them to get information about processes deep within stars for the first time. If you listen closely to the sounds [...]

Naming an Asteroid

Comments dhani — September 10, 2008 / 10:16 pm

Names of asteroids were originally taken from God’s and Godesses, but these ran out long ago. Now, there are asteroids called Lennon, McCartney, Edna, Bertha, Geranium, Petunia, Chicago, Granule, Gogol, Laputa, Mark Twain, Karl Marx, NORC, Libya, Atlantis, Utopia, Transyvania, Paradise, Rumpelstilz, Evita, Fanatica, Fanny, Piccolo, Requiem, Lucifer, Tolkein, Echo, Dali, Retsina, Zulu, Limpopo, Bach, [...]

Facts on Moon

Comments dhani — July 9, 2008 / 7:10 pm

The moon is only 1/4 the size of the earth, and its gravity is only 1/6 of that on earth. This made the U.S. astronauts, during their moon walks, 5/6 lighter than they were on earth. A person who weighed 90 kg on earth would weigh only 15 kg on the moon. Because of this [...]

Stunning Images from Cassini

Comments dhani — June 29, 2008 / 12:58 am

On June 30th, NASA’s Cassini Spacecraft will reach the end of its four-year prime mission. The spacecraft is now begins its extended mission, which was approved in April of this year. On the next two-year mission, the spacecraft will address new questions and brings it closer to two of its most intriguing target: Titan and [...]

Stingray Nebula

Comments dhani — April 18, 2008 / 1:02 am

Pictured here is a Hubble Space Telescope image on Stingray Nebula. Located in constellation Ara (The Altar) at the distance of 18.000 light years, this beautiful object considered as the youngest planetary nebula ever observed!

Stellar Corpses

Comments dhani — March 30, 2008 / 10:15 pm

Magnetars are dense neutron stars a type of stellar corpse with magnetic fields billions of times stronger than any magnet on Earth. They release flashes of X-rays about every 10 seconds with an occasional gamma-ray burst. They weren’t classified as a distinct star type until 1998, nearly two decades after their telltale light shows were first [...]

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  • Koen — Terima kasih, Echi dan Dhani :). Salah satu misi Pernik Ilmu memang membuka mata masyarakat, dengan bahasa awam, tentang fakta-fakta ...
  • » Mengapa Langit Malam Gelap? ~ Blog Archive ~ Pernik Ilmu (Asia Blogging Network) — [...] pertama di Pernik Ilmu ini berjudul Mengapa Langit Biru :). Tapi kita tahu langit hanya biru di hari yang ...
  • dedy — sebutkan macam2 sel volta!!!kasih gambar dan bagaimana carajanya!!!
  • Taufik Hidayat — Mengapa pd wkt bln purnama kalau kita mancing dilaut, gak ada ikannya yg mau makan umpan yg ada di kail ...
  • sardes — hi.......Q sardes saat ni sedang kul di salah satu PTN yang tentunya FMIPA n jur MM...q mw nanya nih kira2 ...
  • Mukmin — slam kenal mbak Yessi,
  • nurul azizah — salut wat astronot....
  • elang — nyerah dech, apa jawabannya???????
  • In-daH — oo....kERen banget....
  • Erastosthenes — Jadi, 1 drajat itu sbnarnya brp km? 1 drajat itu brp menit?