Jejak yang Abadi - tentang akhirat (1)

Tepuklah air di bak kamar mandi dengan tangan. Air bergelombang bukan? Tinggalkan 1 jam, lalu lihat lagi, pasti gelombangnya hilang, atau pelan sekali. Apakah itu berarti jejak tepukan tangan hilang?

Tidak!

Jejak itu sebenarnya telah berkonversi menjadi energi air dalam bentuk gelombang tertentu. Dan gelombang itu menimpa udara di sekelilingnya, menimpa dinding bak,dan mungkin mempengaruhi gelombang-gelombang yang lain. Dinding bak akan mempengaruhi udara di balik dinding juga, udara akan bergerak sedemikian rupa dan pasti tertentu.

Terus menerus energi-energi itu akan berantai mengembara sesuai hukum alam. Sampai suatu saat nanti bumi dan matahari ditelan black hole pun, pada saat itupun bumi akan berbentuk sedemikian rupa yang membawa bukti-bukti jejak makhluk. Dalam skala yang luar biasa kecil, pasti akan tetap ada, di black hole sekalipun.

Lalu, apakah black hole itu kekal?

Since nothing can escape from the gravitational force of a black hole, it was long thought that black holes are impossible to destroy. But we now know that black holes actually evaporate, slowly returning their energy to the Universe. The well-known physicist and author Stephen Hawking proved this in 1974 by using the laws of quantum mechanics to study the region close to a black hole horizon. ( http://hubblesite.org/explore_astronomy/black_holes/encyc_mod3_q10.html )

Ternyata black hole memancarkan kembali gelombang-gelombang energi ke alam raya.

Quantum mechanics dictates that matter on the smallest scales often behaves more like waves than like particles. Much modern technology relies on this

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Bagaimanakah keadaan jejak-jejak itu nanti? Bagaimana pula keadaan jejak material manusia setelah dilumat gaya inti black hole, dan kemudian mengembalikan lagi energinya ke alam raya?

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We cannot glimpse what lies inside the event horizon of a black hole because light or material from there can never reach us. Even if we could send an explorer into the black hole, she could never communicate back to us.

Current theories predict that all the matter in a black hole is piled up in a single point at the center, but we do not understand how this central singularity works. To properly understand the black hole center requires a fusion of the theory of gravity with the theory that describes the behavior of matter on the smallest scales, called quantum mechanics. This unifying theory has already been given a name, quantum gravity, but how it works is still unknown. This is one of the most important unsolved problems in physics. Studies of black holes may one day provide the key to unlock this mystery.

Einstein’s theory of general relativity allows unusual characteristics for black holes. For example, the central singularity might form a bridge to another Universe. This is similar to a so-called wormhole (a mysterious solution of Einstein’s equations that has no event horizon). Bridges and wormholes might allow travel to other Universes or even time travel. But without observational and experimental data, this is mostly speculation. We do not know whether bridges or wormholes exist in the Universe, or could even have formed in principle. By contrast, black holes have been observed to exist and we understand how they form.

( http://hubblesite.org/explore_astronomy/black_holes/encyc_mod3_q4.html )

image : http://hubblesite.org/explore_astronomy/black_holes/encyc_mod3_q10.html