Technology

Scientists are beginning to suspect that an ancient supernova irradiated our entire planet, killing much of its life.

Humans have more than one hundred billion neurons and more than one billion neuronal connections in the brain, although the exact number and location may vary.

Solar panels are made up of many small units called photovoltaic cells or solar cells. Photovoltaic cells are responsible for transforming light energy into electrical energy through the photoelectric effect. In this way, many cells connected to each other form a solar panel.

In all cities in Europe, the demand for delivery services is increasing. But these deliveries affect urban life as they increase traffic congestion, noise and pollution, and many cities are testing alternative modes of transportation that could help.

Astronauts have to spend weeks, and even months, locked up with the same people. They face stress, loneliness and isolation and still do their job.

The NASA / ESA Hubble Space Telescope has produced a spectacular image of part of this spiral galaxy.

Most have a humanoid appearance, but there are also cases in which we find animated characters that are clearly identifiable as non-human.

The debate about the nature and origin of this object, which has puzzling characteristics, continues to confront scientists.