Astronomers Use Planet-Hunting Satellite To See White Dwarf “Switch On and Off” for First Time

The researchers led by Durham University, UK, used NASA’s Transiting Exoplanet Survey Satellite (TESS) to observe the unique phenomenon. White dwarfs are what most stars become after they have burned off the hydrogen that fuels them. They are approximately the size of the Earth, but have a mass closer to that of the Sun. The white […]


Scientists Solve an Evolutionary Curiosity: Why a Human Egg Is 10 Million Times the Volume of a Sperm Cell

Egg and sperm cell size evolved from competition. Limited resources drove gametes to differ vastly in size and number. In most living animals, egg cells are vastly larger than sperm cells. In humans, for example, a single egg is 10 million times the volume of a sperm cell. In a new study, Northwestern Engineering researchers […]


North Korean exports to China more than double to near pre-pandemic levels

September spike could signal DPRK’s willingness to expand trade for first time since the pandemic began, expert says The total value of China-North Korea trade more than doubled between August and September, reaching its highest value in more than a year, newly released data shows. According to the Chinese General Administration of Customs (GAC), China […]


Houthis advance in Shabwa and Marib as fighting intensifies in Yemen

Iran-backed Houthis were now in control of the Assilan, Bayhan and Ain districts in Shabwa as well as the Abdiya and Harib districts in Marib, said local officials and residents. A fighter loyal to Yemen’s Saudi-backed government mans a position near the frontline facing Iran-backed Houthi rebels in the country’s northeastern province of Marib, on […]