Science talking

08/05/2025

What if North America were placed on Mars and Jupiter? Here's a stunning look at the size comparison!

08/05/2025

Clearest image ever taken of Venus...

08/05/2025

Travel Times at the Speed of Light 🚀

If you could travel at the speed of light – 186,000 miles per second (299,792 km/s) – it would still take minutes to reach our neighboring planets, and hours to reach the distant gas giants.

This chart puts the vast scale of our own solar system into perspective. And remember – current spacecraft travel thousands of times slower than light. For example, NASA’s Parker Solar Probe, the fastest spacecraft ever built, has reached speeds of 430,000 miles per hour (700,000 km/h). That's fast enough to get from Philadelphia to Washington, D.C., in one second. And even at that record-breaking pace, it would take over 2 months to reach Jupiter.

So if anyone ever tells you “it’s just the next planet over,” remember – in cosmic terms, everything is really, really far.

08/05/2025

The “Cosmic Vine” – A Galaxy Megastructure in the Early Universe 🔥🔥

08/05/2025

The Moon plays a crucial role in stabilizing Earth's axial tilt.
Without the Moon, Earth's tilt could vary wildly, possibly swinging up to 85°.
This would result in extreme and chaotic changes in climate over time.
Currently, Earth's tilt is about 23.5°, giving us relatively predictable seasons.
The Moon's gravitational pull helps maintain this steady tilt.
Without it, other planets, especially Jupiter, could exert greater influence.
These external gravitational forces would destabilize Earth's rotation.
Large axial tilts could cause polar regions to face the Sun for months or years.
Equatorial regions might experience freezing temperatures intermittently.
Habitability zones on Earth would shift constantly.
Such climate chaos would severely challenge long-term evolution of life.
Mass extinctions could occur more frequently due to abrupt environmental shifts.
Agriculture and human civilization likely couldn’t develop as they did.
The ocean currents and weather systems would become more unpredictable.
Ice ages and heatwaves could occur in irregular cycles.
Animals and plants would struggle to adapt quickly enough.
The Moon also slows Earth's rotation gradually, stabilizing day length.
Without it, Earth's day might be much shorter, affecting biological rhythms.
Tidal forces from the Moon also shape marine ecosystems and coastal life.
In short, the Moon is vital for Earth's climate stability and life as we know it.

02/05/2025

Earth view from the Moon

02/05/2025

Sprites, camera, action! That is how the saying goes, right? 🧚🎥

An astronaut on the International Space Station photographed a red sprite, an atmospheric phenomenon associated with lightning, over North America on June 26, 2024. The images were stitched together to make this timelapse video.

Sprites appear to be connected to positively charged cloud-to-ground lightning strokes. The positively charged lightning interacts with atmospheric nitrogen, creating an electrical breakdown that produces flashes of red light. Learn more: https://go.nasa.gov/3Cwb2co

Have you seen any sprites lately? Submit your sprites and other transient luminous events (TLEs) to NASA’s project, Spritacular: https://go.nasa.gov/3CroA8N

29/03/2025

A Chinese rescue team arrived on Saturday, while Russia and the US offered aid in the disaster.

02/02/2025

Lunar Calendar for February 2025 💜 🌖

01/02/2025