Knowledge is your true value
Sciences›Chart5 days ago

Milky Way Galaxy: Comprehensive Space Discovery and Galactic Specifications

عدد النجوم المرصودة
1.7
مليار نجم
كتلة المجرة
890
مليار كتلة شمسية
قطر المجرة
120,000
سنة ضوئية
كتلة الثقب الأسود المركزي
4.3
مليون كتلة شمسية
النجوم المرصودةأكبر مسح فلكي بتاريخ البشرية عبر غاياموقع الشمسنقطة مرجعية لقياساتنا الكونيةالمادة المظلمة الفترةتشكل أكثر من 85% من كتلة المجرة
Source: وكالة الفضاء الأوروبية (ESA) - مهمة غايا، مرصد ALMA، ناسا

Gaia and ALMA observatory data from 2026 revealed unprecedented details of the Milky Way, mapping 1.7 billion stars with chemical precision. The galaxy's total mass is approximately 890 billion solar masses spanning 120,000 light-years. Recent observations discovered complex gas filaments in the central region flowing at extreme velocities, forming new stars. The central supermassive black hole Sagittarius A* has 4.3 million solar masses, located 26,000 light-years from Earth. Studies also revealed the Sun's ancient migration 4-6 billion years ago and wavy galactic structures reflecting interactions with the Magellanic Clouds.

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Sciences›Fact Check22 hours ago
Is It True That Drinking Plenty of Water Cleanses the Kidneys of Toxins?

The claim that drinking water cleanses kidneys of toxins is widespread on social media and health websites. We examine popular claims about water and kidney health using medical studies and reliable sources to determine what is accurate and what is exaggerated or misleading.

Drinking 8 glasses of water daily is the ideal and recommended amount for everyone

✗ False

There is no single amount that works for everyone. Individual water needs vary by age, gender, physical activity, and environment. Men need about 3.7 liters and women about 2.7 liters daily, but these are general guidelines, not fixed rules.

Sources:موقع كيورا الطبيمايو كلينكالشرق للأخبار

Water helps kidneys remove waste and toxins from the body

✓ True

True. Water is essential for kidney function, helping filter waste and toxins from blood and remove waste through urine. Proper hydration makes kidney filtration more efficient.

Sources:الجزيرة نتالشرق للأخبارمنصة الطبي

Drinking large amounts of water at once is better than spreading it throughout the day

✗ False

False. Water should be spread throughout the day, not consumed in large amounts at once. Kidneys can only filter about half a liter per hour, so large amounts in short periods stress them.

Sources:ويب طبموقع سوهاتيالطبي
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Sciences›Timeline3 days ago
History of Modern Physics — From Theory of Relativity to Quantum Mechanics (1905-2024)

This timeline showcases the most important milestones in the development of modern physics, from Einstein's theory of relativity through quantum mechanics laws to contemporary discoveries. It documents the scientific journey of how we evolved from understanding motion and matter to exploring fundamental particles and black holes.

1905

⚡ Special Theory of Relativity

Albert Einstein introduced his revolutionary theory that transformed our understanding of time, space, and energy, with the equation E=mc² linking mass and energy.

Ernest Rutherford discovered that atoms contain a positively charged nucleus orbited by electrons, disproving the previous plum pudding model.

1911
1925

🌊 Quantum Mechanics Foundation

Werner Heisenberg and Erwin Schrödinger developed the foundations of quantum mechanics, with Heisenberg's uncertainty principle limiting what we can know about particles.

The greatest physicists of the era gathered to discuss quantum mechanics interpretation, beginning Einstein and Bohr's famous debates on quantum reality's nature.

1927
1938

⚛️ Nuclear Fission Discovery

Lise Meitner and Otto Hahn discovered nuclear fission, opening the door to nuclear energy and weapons that transformed the world.

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