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Em 2026: 318 notícias
Desde 1995: 3028 notícias
Earth Is at Risk From 'Invisible' Asteroids Lurking Near Venus
Publicado em 30 de setembro de 2025
We could be overlooking an entire population of asteroids that pose a threat to Earth on the very simple basis that they're extremely hard to see.
In the space shared by the orbit of Venus, hundreds of undiscovered asteroids could be orbiting the Sun, hidden from our view simply because of their position.
Because they're closer to the center of the Solar System than we are, we have to look in the direction of the Sun to see them – meaning any sunlight they reflect is drowned out [...]
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MIT Joins In Constructing Giant Magellan Telescope
Publicado em 30 setembro 2025The following article is adapted from a joint press release issued today by MIT and the Giant Magellan Telescope. MIT is lending its support to the Giant Magellan Telescope, joining the international consortium to advance the $2.6 billion observatory in Chile. The Institute's participation, enabled by a transformational gift from philanthropists Phillip (Terry) Ragon '72 and Susan Ragon, adds to the momentum to construct the Giant Magellan Telescope, whose 25.4-meter aperture will [...]Mirage News (Austrália) -
Earth Is at Risk From 'Invisible' Asteroids Lurking Near Venus
Publicado em 30 setembro 2025We could be overlooking an entire population of asteroids that pose a threat to Earth on the very simple basis that they're extremely hard to see. In the space shared by the orbit of Venus, hundreds of undiscovered asteroids could be orbiting the Sun, hidden from our view simply because of their position. Because they're closer to the center of the Solar System than we are, we have to look in the direction of the Sun to see them – meaning any sunlight they reflect is drowned [...]Head Topics (Austrália) -
Amazon giants increasing in size
Publicado em 30 setembro 2025A sweeping new study has found the largest trees in the Amazon are increasing in size, growing, multiplying in number and continuing to play a major role in moderating the effects of climate change. After tracking changes in 188 intact forest plots across the Amazon over the past 30 years, the investigating group found a 3.3% expansion in big trees per decade. Led by researchers from universities in Brazil, the UK and elsewhere, the findings were published in the journal Nature Plants, [...]Arborage (Austrália) -
Solar storms linked to increased heart attack risk in women
Publicado em 27 setembro 2025An article published in the journal Communications Medicine points to a correlation between disturbances in the Earth's magnetic field resulting from solar storms and an increase in the frequency of heart attacks, especially among women. The authors reached this conclusion by analyzing data from the public health network of São José dos Campos, in the state of São Paulo, Brazil, recorded between 1998 and 2005, a period considered to be one of intense solar activity. [...]News Medical (Austrália) -
Researchers develop tool to predict how patients will respond to common multiple sclerosis drug
Publicado em 26 setembro 2025Brazilian researchers, in partnership with French institutions, have developed a tool that can predict how patients will respond to natalizumab, one of the most commonly used drugs for treating multiple sclerosis. Despite its effectiveness, about 35% of users do not respond completely to therapy and experience a return of symptoms within two years of starting treatment. Additionally, while it helps reduce the frequency and severity of outbreaks and slows disease progression, it can cause [...]News Medical (Austrália) -
How exercise changes heart nerves
Publicado em 26 setembro 2025Frequent exercise doesn’t just strengthen the heart—it also transforms the nerves that control it, according to groundbreaking new research led by the University of Bristol. This study, published in the journal Autonomic Neuroscience, offers promising new directions for treating a range of heart problems. For the first time, researchers have shown that moderate aerobic exercise not only reshapes the nerves driving the heart but does so in a left-right specific pattern. The study [...]KSR - knowRidge Science Report (Austrália) -
Solar Storms Linked to Higher Heart Attack Risk in Women
Publicado em 26 setembro 2025An article published in the journal Communications Medicine points to a correlation between disturbances in the Earth's magnetic field resulting from solar storms and an increase in the frequency of heart attacks, especially among women. The authors reached this conclusion by analyzing data from the public health network of São José dos Campos, in the state of São Paulo, Brazil, recorded between 1998 and 2005, a period considered to be one of intense [...]Mirage News (Austrália) -
Amazon rainforest trees are getting bigger due to climate crisis, study finds
Publicado em 26 setembro 2025Trees across the Amazon rainforest are growing larger in response to rising levels of carbon dioxide in the atmosphere, according to a major new study. The research, published in the Nature Plants journal, found that the average size of trees in the Amazon has increased by 3.2 per cent every decade for at least the past 30 years. Scientists say the trend is consistent with the fertilising effect of higher concentrations of CO2, which can boost plant growth. The findings come from the [...]inkl (Austrália) -
Invisible asteroids near Venus may pose long-term danger to Earth
Publicado em 25 setembro 2025An international team led by Sao Paulo State University (UNESP) has uncovered a population of asteroids that may threaten Earth but remain effectively hidden from current surveys. These objects, which share Venus's orbit, are extremely difficult to observe because of their position in the sky relative to the Sun. The study combined analytical modeling and long-term simulations, revealing that so-called Venusian co-orbital asteroids can shift between orbital configurations every 12,000 [...]Space Daily (Austrália)