Ismael @isma2605 - Twitter Profile

.@SecWar: "Radical Islamists can't have a nuclear bomb that they wield against the world. [@POTUS] gave them every opportunity... Ultimately, those nuclear ambitions — which never ceased — are something that had to be addressed."

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Ismael @isma2605

3 months ago

Is Sparkling Water The New “Brain Fuel” for Gamers? - https://t.co/WIGPW50DlY via @neurosciencenew

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Ismael @isma2605

3 months ago

An Overview of the Leading Theories of Consciousness | Psychology Today https://t.co/IQmLO9nqKe

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Ismael @isma2605

3 months ago

Yes

BARRON TRUMP @TrumpBarron_Q

3 months ago

🚨BREAKING: President Trump announces he has a "backup plan" for tariffs after the Supreme Court ruled his tariffs to be illegal. Do you firmly support trump on this? A. Huge Yes B. No IF Yes, Give me a THUMBS-UP👍!! MAKE THIS GO VIRAL ON 𝕏. LET’S GO Follow @Marco_rubio_Q

TrumpBarron_Q's tweet photo. 🚨BREAKING: President Trump announces he has a "backup plan" for tariffs after the Supreme Court ruled his tariffs to be illegal.

Do you firmly support trump on this?

A. Huge Yes
B. No

IF Yes, Give me a THUMBS-UP👍!!

MAKE THIS GO VIRAL ON 𝕏. LET’S GO
Follow @Marco_rubio_Q https://t.co/czKFhsz3lp

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Ismael @isma2605

4 months ago

How many galaxy in the universe? https://t.co/prkl3cTjgi via @YouTube

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isma2605 retweeted

Erika 

@ExploreCosmos_

4 months ago

When we look into the sky, we are not seeing the universe as it exists now but as it existed at different moments in the past. Light needs time to travel & that simple fact turns every observation into a journey backward through cosmic history. The Moon appears as it was about one second ago, the Sun as it was eight minutes in the past & distant galaxies as they were millions or billions of years before Earth even formed. In this sense, astronomers behave almost like cosmic archaeologists, reconstructing history from signals that have been traveling across space for immense spans of time. Distance in astronomy is therefore inseparable from time: the farther we look, the earlier in the universe’s history we are observing. The universe is ~13.8 billion years old, which might suggest that the farthest observable objects should lie 13.8 billion light-years away. But here is the catch: space itself has been expanding while light traveled toward us. Galaxies that emitted ancient light were much closer when that light began its journey, yet over billions of years the expansion of space stretched the distance between us. When this expansion is included in cosmological calculations, the observable universe turns out to be far larger than its age alone would imply. Today, its radius is roughly 46 billion light-years in every direction, corresponding to a diameter of about 93 billion light-years. This limit is called the particle horizon. It is not a physical boundary marking the end of the universe; it simply represents the maximum distance from which light has had enough time to reach us since cosmic expansion began. Beyond that horizon, more universe almost certainly exists, possibly extending indefinitely, but signals from those regions have not yet arrived and may never do so. The observable region slowly grows as time passes, because additional ancient light continues to reach us. Modern telescopes allow us to approach this limit not by traveling farther but by detecting increasingly faint and redshifted light. As the universe expands, wavelengths are stretched, shifting radiation toward longer wavelengths through cosmological redshift. Light emitted in UV or visible wavelengths by the first generations of stars now arrives primarily in the IR. Instruments sensitive to IR radiation can therefore detect galaxies formed only a few hundred million years after the Big Bang, revealing the earliest stages of cosmic structure formation. This leads to a deeper barrier. During the first several hundred thousand years after the Big Bang, the universe was filled with a hot, dense plasma that scattered photons continuously, making space opaque. Only when atoms formed could light travel freely. The radiation released at that moment is observed today as the cosmic microwave background, the oldest light we can directly observe. Earlier epochs cannot be explored using electromagnetic radiation because photons simply could not propagate through the primordial plasma. To probe those earlier times, scientists look instead to other messengers such as neutrinos or primordial gravitational waves. Another consequence of cosmic expansion is that some galaxies near the edge of the observable universe are now receding from us at effective speeds greater than the speed of light. This does not violate relativity because the motion is not through space but due to the expansion of space itself. Many of those galaxies are already permanently beyond our ability to communicate with, even though their ancient light is still arriving today. We are observing regions that are, in a causal sense, already disconnected from us. The maximum distance we can observe is set not only by technology but by fundamental physics: the age of the universe, the speed of light, and cosmic expansion. Better instruments let us see earlier epochs, but they do not move the observational horizon. Looking deeper into space simply means looking further back in time.

ExploreCosmos_'s tweet photo. When we look into the sky, we are not seeing the universe as it exists now but as it existed at different moments in the past.

Light needs time to travel & that simple fact turns every observation into a journey backward through cosmic history. The Moon appears as it was about one second ago, the Sun as it was eight minutes in the past & distant galaxies as they were millions or billions of years before Earth even formed.

In this sense, astronomers behave almost like cosmic archaeologists, reconstructing history from signals that have been traveling across space for immense spans of time.

Distance in astronomy is therefore inseparable from time: the farther we look, the earlier in the universe’s history we are observing.

The universe is ~13.8 billion years old, which might suggest that the farthest observable objects should lie 13.8 billion light-years away. But here is the catch: space itself has been expanding while light traveled toward us.

Galaxies that emitted ancient light were much closer when that light began its journey, yet over billions of years the expansion of space stretched the distance between us. When this expansion is included in cosmological calculations, the observable universe turns out to be far larger than its age alone would imply.

Today, its radius is roughly 46 billion light-years in every direction, corresponding to a diameter of about 93 billion light-years.

This limit is called the particle horizon. It is not a physical boundary marking the end of the universe; it simply represents the maximum distance from which light has had enough time to reach us since cosmic expansion began.

Beyond that horizon, more universe almost certainly exists, possibly extending indefinitely, but signals from those regions have not yet arrived and may never do so. The observable region slowly grows as time passes, because additional ancient light continues to reach us.

Modern telescopes allow us to approach this limit not by traveling farther but by detecting increasingly faint and redshifted light. As the universe expands, wavelengths are stretched, shifting radiation toward longer wavelengths through cosmological redshift. Light emitted in UV or visible wavelengths by the first generations of stars now arrives primarily in the IR.

Instruments sensitive to IR radiation can therefore detect galaxies formed only a few hundred million years after the Big Bang, revealing the earliest stages of cosmic structure formation.

This leads to a deeper barrier. During the first several hundred thousand years after the Big Bang, the universe was filled with a hot, dense plasma that scattered photons continuously, making space opaque. Only when atoms formed could light travel freely.

The radiation released at that moment is observed today as the cosmic microwave background, the oldest light we can directly observe. Earlier epochs cannot be explored using electromagnetic radiation because photons simply could not propagate through the primordial plasma. To probe those earlier times, scientists look instead to other messengers such as neutrinos or primordial gravitational waves.

Another consequence of cosmic expansion is that some galaxies near the edge of the observable universe are now receding from us at effective speeds greater than the speed of light. This does not violate relativity because the motion is not through space but due to the expansion of space itself. Many of those galaxies are already permanently beyond our ability to communicate with, even though their ancient light is still arriving today. We are observing regions that are, in a causal sense, already disconnected from us.

The maximum distance we can observe is set not only by technology but by fundamental physics: the age of the universe, the speed of light, and cosmic expansion. Better instruments let us see earlier epochs, but they do not move the observational horizon. Looking deeper into space simply means looking further back in time.

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Ismael @isma2605

4 months ago

@GoldenAgeUnfold D

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Ismael @isma2605

5 months ago

Trump declares himself Venezuela’s ‘acting president’ in online post after Maduro ouster https://t.co/jox1qjN77G #FoxNews

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Ismael @isma2605

5 months ago

@StandUpForTrmp Yes

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Ismael @isma2605

5 months ago

DECEMBER HARVARD CAPS / HARRIS POLL: TRUMP APPROVAL RATING RESETS TO 47% POST-SHUTDOWN; AFFORDABILITY AND INFLATION TOP ECONOMIC WORRIES HEADING INTO 2026 https://t.co/dMAiv3wAVZ

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isma2605 retweeted

Pete Hegseth

@PeteHegseth

6 months ago

President Trump has been clear: the blockade of sanctioned oil tankers departing from, or bound for, Venezuela will remain in full force until Maduro’s criminal enterprise returns every stolen American asset. The @DeptofWar, with our partners at @USCG, will unflinchingly conduct maritime interdiction operations — through OPERATION SOUTHERN SPEAR — to dismantle illicit criminal networks. Violence, drugs, and chaos will not control the Western Hemisphere.

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María Corina Machado

@MariaCorinaYA

6 months ago

Ayer pude conversar telefónicamente con Hamidreza, hermano de la premio Nobel secuestrada por el régimen iraní, Narges Mohammadi (@nargesfnd) y manifestarle todo nuestro respaldo en estas horas tan difíciles y oscuras. A Narges la mantienen aislada en un centro de detención de Mashhad y no le han permitido ni una llamada telefónica con sus familiares y abogados. Antes, ella ya había pasado 10 años de su vida tras las rejas y ahora nadie sabe por cuánto tiempo más puedan tenerla en prisión. Además, como madre enfrenta uno de los peores castigos: no poder abrazar a sus hijos desde 2015 por la prohibición de salida del país. Hoy, viendo su foto en la exhibición del Centro Nobel de la Paz, no dejo de pensar en la crueldad de regímenes como el de Irán y el de Venezuela, capaces de hacer lo que sea para mantenerse en el poder y callar las voces que desnudan la verdad, pero nuestro mensaje es indetenible, así como este movimiento por la paz y la libertad que el mundo entero conoce. En la medida en que nos juntamos y defendemos estos valores, somos aún más fuertes. Libertad inmediata para Narges, para Irán y para Venezuela.