Tomorrow (Sunday) a friend is speaking at one of our churches in Lutsk, so we're going as a group (3 adults and 2 kids - so far.) It will be a long day, as it's usually 3 1/2 or 4 hours there each way... but we're looking forward to the time! Pictures will follow!

Contoh Undangan Pernikahan - buat sobat nih yang pada mencari Contoh Undangan ataupun Undangan Pernikahan yang bagus, menarik, elegan tentu memiliki nilai dan tempat sendiri dong xixixi sobat yang akan menghadapi hidup baru ataupun memulai kehidupan yang baru(baru mau nikah maksudnya heheh) perlu lah tahu tentang seluk beluk mengenai Undangan Ini ya, di karenakan sobat sekalian butuh pengalaman dong, agar tidak menyesal di kemudian hari karena persiapan itu penting :) seperti bahas Proposal aja nih ataupun Pidato aja nih, baiklah sobat sekalian inilah beberapa Contoh Undangan Pernikahan yang mungkin sobat sekalian Sukai :D

Contoh Undangan Pernikahan

Contoh Undangan Pernikahan

Contoh Undangan Pernikahan

Contoh Undangan Pernikahan

Contoh Undangan Pernikahan

Contoh Undangan Pernikahan

Contoh Undangan Pernikahan

Contoh Undangan Pernikahan

yah monggo di pilih-dipilih yang di sukai :D oh ya satuhal lagi Media Online tidak menyediakan lhoo pembuatan Undangan Pernikahan tersebut. oh ya yang lagi ada tugas Makalah ataupun yang lagi Pengen tahu Cara Membuat Email ataupun tata cara Daftar Gmail ya silahkan :D

Video Lucu - akhirnya bisa update juga setelah lama gak update-update, sobat pasti dah tahu dong tentang kemaren apa aja yang udah di bahas mengenai Cerpen Lucu serta Gambar Lucu dan juga Cerita Lucu akan tetapi biar melengkapi koleksi saya menambahkan Video Lucu agar Sobat Media Online puas lah :) untuk mengobati rasa Stress karena pekerjaan ataupun karena patah Hati(bagi yang di rundung masalah cinta hehe baca Juga nih Zodiak Hari Ini dan juga Ramalan) okedeh sobat sekalian biar langsung ngakak di lihat satu-satu nih Video meski gak seperti Video Hantu xixixi sapa tahu sobat pada seneng :D

Vidio Video Lucu Youtube

heheh lucu ya :) emang kok khusus Vidio Lucu mengenai Bayi yah soalnya bayi itu memiliki aura lucu dari awal sih ixixi jadi terpikat aku hehehe ngebahas tentang Video Lucunya oke moga sobat beraktifitas dengan senang dan bahagia dan tentunya beruntung doh :D

Three arrested, accused of illegally feeding homeless

Image via Digital Sky via Stuarts tweet

French amateurs have reported a supernova in M51 (2 June 2011 at 00:52 UTC). Details (in French) and images here.

It's a Type II supernova, more details here. Sadly, all the GRAS telescopes are offline at the moment (curse you daylight).

Update: The Sun has set in Spain and Pete Poulous Sends this image of M51 taken with GRAS-07 using a a 300 sec luminance exposure.

The T class Brown Dwarf Gliese 229B, visualised in Celestia near its primary star, Gleiese 229 A.

Space is big, you think it’s a long way to the shop if you want a sausage roll, but compared to space it’s nothing [1]. Against this vastness our sense of scale is confounded.

An example of this came this week when a correspondent asked me about my observations of comet 2010 X1 Elenin [2]. One of the prominent internet memes going around at the moment is that Elenin is actually the Moon of a Brown Dwarf star or a Brown Dwarf star itself (often claimed to be 4 times Jupiter’s size). I was asked if I could look out for something dim close to Elenin.

There is just one problem, a Brown Dwarf close to Elenin would be very bright.

Elenin currently is just outside the orbit of Mars (visualised in Celestia, click to embiggen)

Brown Dwarf stars are stars that have only a few times the mass and radius of Jupiter; they are too small to start hydrogen fusion, although they may run for a short while on deuterium fusion. They are typically quite cool compared to main sequence stars, and emit very little visible light.

From a distance of a few light years or more they are invisible to optical telescopes. To find these dim almost-stars, we need to look with infrared sensitive telescopes. For example the WISE telescope had as one of its missions surveying for Brown Dwarfs. The coolest Brown Dwarf so far discovered by WISE is WISEPC J045853.90+643451.9 which is over 18 light years away. With a temperature of 600 K it is hot enough to melt lead and tin, but is totally invisible to our current optical telescopes

But while these almost stars produce very little visible light of their own, they reflect light perfectly well. If you go out in the early morning and look to the north-east, you will see a bright object well above the horizon (brighter Venus is well below it). That is Jupiter, a failed Brown-Dwarf, which we can see just fine.

Elenin is currently just outside Mars’s orbit, we can easily calculate how bright an object 4 times Jupiter’s size would be at that distance using the formulas here. I’ve put my calculations up on Google Docs for people to play with (click this link for access to spreadsheet [3]).

Simulation of what a Brown Dwarf would look like in the sky tonight if it was near comet Elenin's current position. I've used Stellarium's cometary body codes, using a dark, non-luminous object with 4 times Jupiter's diameter. It would be kind of obvious.

If a Brown Dwarf with a surface much darker than the Moon was at Elenin’s distance (as of June 1), it would have a magnitude of -6.5.

This is much brighter than Venus, bright enough to cast shadows at night and bright enough to be easily seen in daylight. This is an under estimate, as a Brown Dwarf would be more likely to be more reflective, more like Jupiter. An object 4 times Jupiter’s size just outside Mars’s orbit would also be visible as a small disk (you can do the calculations for this one as an exercise for yourselves, see the Stellarium simulation above).


















Simulating a non-self luminous Brown Dwarf using fruit. The granny smith apple is the Brown dwarf. Left hand panel, the Brown Dwarf at Pluto's orbit. Right hand panel, the brown Dwarf at Mars's orbit. The mandarin is Jupiter, the lillypilli pit is Mars and and the lillypilliy (closest to torch) is Earth. Distances have been scaled at 10 cm= I AU.

Brown Dwarfs are only invisible to us because they lie deep in the vasty dark, away from any light sources that can illuminate them. This is what causes confusion for some folks. Brown Dwarfs themselves produce little or no visible light but they are perfectly capable of reflecting light, as does Jupiter.

Here’s a test you can do yourself with a torch an some pieces of fruit. I’ve scaled the solar system so that 1 AU (the distance from Earth to the Sun) is 10 cm from the torch I’m using as the Sun. Mars’s orbit lies 25 cm away, Jupiter’s orbit is 62 cm away and Pluto’s orbit is 4 meters away. The orbit of the hypothetical planet Tyche would be two blocks away, and the nearest star, Proxima Centauri, lies 2.7 km away on the other side of Taperoo. I’ve used a lillypilli for Earth, a mandarin for Jupiter and an apple for a Brown Dwarf (see diagram above).

Strictly speaking, if I wanted to scale the diameters of the planets to the scale of the solar system, then I would have used 1 meter for 1 AU, them the Brown Dwarf would be 2 mm in diameter (I leave it as an exercise for the reader to test this themselves).

As you can see, when the non-self luminous “Brown Dwarf” is at Pluto’s distance, it is fairly dim, but when we move the “Brown Dwarf” to just outside of Mars’s orbit, it is quite bright. The atmosphere of a real T class is probably as reflective as a Granny Smith (but more a Magenta colour). Such an object would be readily visible in the night sky.

Summary: So, as you can see, it is impossible for Elenin to be a moon of a Brown Dwarf star (also we would have noticed its orbital motion by now) or a Brown Dwarf itself.

UPDATE: Leonid Elenin himself has done a simulation of what would happen to solar system orbits if a Brown Dwarf passed though. It would be quite obvious.

[1] Obligatory Douglas Adams homage, with added AC/DC.
[2] I haven’t got any yet, either I’ve got the time wrong and the comet has set, or the observatory is closed because of bad weather.
[3] Note that for the H calculation Do is in Km, but for the magnitude calculation, Do is in AU. The calculated magnitudes of Venus, Jupiter and Neptune agree with their observed magnitudes.

Morning sky looking west as seen from Adelaide at 5:40 am local time on Thursday June 16 showing the full Moon in total eclipse. Similar views will be seen elsewhere at the equivalent local time. Click to embiggen.

The June edition of Southern Skywatch is now up.

June has less action in the morning skies than May, but it is still worth watching. The bright planets are stretched out in a line. Jupiter is prominent, Venus comes closer to the horizon and Mercury is lost from view. Mars comes close to the Pleiades.

The Moon undergoes the longest total eclipse since 2000 on the morning of June 16. The sun rises as the Moon is still eclipsed. This should be great if the clouds hold off.

Saturn is well past opposition, when it is biggest and brightest as seen from Earth. Saturn is still an excellent telescopic object in the evening. Good telescopic observation can be had from around 8:30 pm on.

Contoh Proposal - sobat yang lagi ada tugas Proposal dan bingung nih cari kemana aja biar dapet dan sudah keliling-keliling :) dan tentu buat sobat Setia Blog Media Online yang kebingungan nih :D setelah sebelumnya saya membahas tentang Makalah dan juga tentang Pidato sekarang mencoba ngebahas tentang Contoh Proposal oh iya hampir lupa kemaren juga bahas tentang Lamaran Kerja tuh hehehe sapa tahu sobat sekalian butuh dan lagi bingung cari dimana neh :) dan tahukah sobat pengertian daripada Proposal, Proposal adalah sebuah tulisan yang dibuat oleh seorang penulis yang berfungsi menjabarkan atau menjelaskan sebuah tulisan kepada pembaca sehingga mereka memperoleh pemahaman serta tujuan tersebut lebih mendetail.

Contoh Proposal

sebelumnya saya mencoba menjabarkan tentang konsep awal di bentuknya proposal(ntar sobat download jadinya) dan inilah sistematikan pembentukan daripada Proposal.

1.Pendahuluan

2. Latar Belakang

3. Masalah

4. Tujuan

5. Sasaran

6. Pelaksanaan

7. Jadwal Pelaksanaan

8. Anggaran Pelaksanaan

9. Penutup

ya itu sistematika mendasar dari sebuah proposal :) dan inilah Contoh Proposal yang sobat bisa unduh(download)



contoh proposal usaha  Download

contoh proposal skripsi  Download



dan bila soba ingin mencari hiburan yah tidak ada salahnya liat yang dikit menyeramkan tapi menyenangkan coba liat Video Hantu xixixi biar refresing dikit lah :) okedeh good luck buat sobat yang lagi ngarap tugasnya.

After days of the weather tormenting me (clear night skies and cloudy mornings), such that I missed all of the crescent Moon in the planetary line-up, I finally got a clear morning yesterday.

Shaky image of Jupiter and Venus taken with my mobile phone held against a Stobie pole. I have GOT to find a better way to stabilise my phone for astronomical images. Mars is too faint to be seen and Mercury is hidden behind the houses.

My real camera? It's in the mail from Melbourne (long story)

.... when you don't have a camera.

Standing on the railway platform tonight, taking with one of my travelling friends, what I thought was Sirius behind his head was a satellite flare, moments later, a fireball screamed across the sky, flaring and leaving a smoky trail.